Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b6403ddfcca0787…

MALICIOUS

PDF

56.0 KB Created: 2020-09-01 09:50:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6344389bc502693676fef5f98e826aea SHA-1: e378a1fce4952ad88262b9670dfc94d602e9a5ff SHA-256: 7b6403ddfcca07871930c53674529c710ede6fa6b8d7711ffa1053bec8010491
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to redirector infrastructure, specifically identified as a link farm and a redirector for free downloads. The primary redirector URL is 'https://ttraff.cc/wix?keyword=du+booster+app+free', which is a strong indicator of a phishing or scam attempt. The presence of a password-protected archive lure suggests the document is intended to facilitate the delivery of a malicious payload, likely after the user is tricked into proceeding through the redirect chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/wix?keyword=du+booster+app+free In PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://static.usrfiles.com/ugd/cfbfd2_2b8314aa980f40a184abb815c389ea91.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/529dbf_f7875e99c0d04b2495dc2de384e336ef.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d162e3_571b917e1b4b4168b6f8ec2ba81fcddb.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/cc03df_d6d30238c7d542aeaada7665dd0da6c0.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2057/3082/files/drenagem_linftica_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9740/0223/files/92784285176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1444/5465/files/dietitians_association_of_australia_enteral_feeding_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4869/0076/files/a_practical_english_grammar_exercises_1_third_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2379/4337/files/loduxozubafami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7480/4126/files/ebay_kleinanzeigen_app_kostenlos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3215656586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3739/9960/files/kaneko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2958/4282/files/89828534081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7754/1787/files/24438705135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5505/5002/files/41580960084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48975286879.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55BE 5628 bytes
SHA-256: ecea2c7a2aba2e8dc08959a5de57812338e67fc6b8830b4219b26e0ea7750c09
font_01_sfnt_off0000695a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x695A 1736 bytes
SHA-256: 2386068f7a73a9f1c684ba6296c5021819071ca54571ed7fff7ef555150aac7c
font_02_sfnt_off000071c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71C1 5004 bytes
SHA-256: a60bc4a202d0e95634a78fb0ad7eae65c77ec4d2ba5b5ae9d449b57c1f292ea8
font_03_sfnt_off000082c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82C3 6640 bytes
SHA-256: 593a452f0795506ac97007ad32b21767cc543cb1bc716fd74108abb5279d52e6
font_04_sfnt_off00009461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9461 11172 bytes
SHA-256: e1d23b201bb935f2c2cc7695923df684676ba4c24e5fbbba81c6bb04e22d22fb
font_05_sfnt_off0000b9ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9AB 16920 bytes
SHA-256: 1d51a6b93399a7e5d37a4c6c955e359f6dd0914d14d5f2931b1ba318fedaf79c

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