Malicious PDF — malware analysis report

Static analysis result for SHA-256 acdce1b16f1d46ca…

MALICIOUS

PDF

45.7 KB Created: 2020-08-25 05:40:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e9d2250b8b8a3552dd352604c9fbbc81 SHA-1: 37d78ab442ea34b44973038769c787fa75c11b47 SHA-256: acdce1b16f1d46cad37c26374e2e02fe7a22fce61f5013bc64f075b0c6fcc82d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document was flagged as malicious by an ML classifier and contains numerous embedded links. One prominent link, 'https://ttraff.com/pify?keyword=solid+waste+management+ppt+presentation', leads to a known malicious redirector. The document also features a large number of external PDF links, many hosted on Shopify, suggesting an attempt to create a link farm for SEO manipulation or to distribute further malicious content. No scripts were extracted, but the primary attack vector appears to be the redirection through the embedded malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.com/pify?keyword=solid+waste+management+ppt+presentation In PDF document text
    • http://wapini.nycridingacademy.org/uploads/1/3/0/8/130874493/ramikom-wariwizidava-gakufi-juvipolu.pdfIn 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
    • https://cdn.shopify.com/s/files/1/0430/6829/3287/files/wondershareelement_blogspot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/47398632306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6395/7909/files/26072803210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0756/5209/files/laximiwokakumumomi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1077/6478/files/big_ideas_math_algebra_1_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1269/9798/files/bbd_ka_full_form_kya_hai.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/rarak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3461/4688/files/98692400840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2720/2205/files/70272867031.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7678/6078/files/putuwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7520/5288/files/23247458297.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

Related samples 2

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBF 1584 bytes
SHA-256: 5d53bb52bbad0c9c2a945120f3815651915eca8e4a0c41f7163aaf4756ad3149
font_01_sfnt_off000073c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73C7 5472 bytes
SHA-256: 318ac4d487c58d30c957cc4c353da38e4cb0b4192fa4c34aa9baeb6866416b4a
font_02_sfnt_off00008660.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8660 10304 bytes
SHA-256: c50352cf68911467a286322cdf7b80c045264e6b2632124164bd3b3d50960ba7

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