Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fec30e4cd0d1427…

MALICIOUS

PDF

48.5 KB Created: 2020-08-24 01:08:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aecfa61c8c24898c7d9f2cf9ee2b4769 SHA-1: 012ba1123a9270c218d11e319aac1d200e46223b SHA-256: 3fec30e4cd0d1427297383dcc9f5dff87e2eaf665b4ce47aa403536c7d273c2a
234 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body also contains this URL, disguised as a tool to 'reduce pdf file size online2pdf'. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm SEO tactic. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates that the document may be intended to trick users into believing they need a password for an archive, a common social engineering tactic to bypass gateway security.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=reduce+pdf+file+size+online2pdf In PDF document text
    • http://desil.thegreenmedicineshop.com/uploads/1/3/0/8/130814328/logakip_vares_kegazajezuri.pdfIn 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/1/0447/8818/7293/files/bhagavatam_in_telugu_internet_archive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3064/1829/files/army_apft_scorecard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/android_mvvm_architecture_components_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9011/5748/files/65906020855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3993/9994/files/reporter_salary_singapore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8457/0019/files/vsco_x_free_filters_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2266/4348/files/17631054402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0426/2561/files/76461276314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/machinery_s_handbook_30.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5780/6486/files/27_amendments.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9328/5277/files/papogukerojevugit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1048/2588/files/kovoluvawipun.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000771c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x771C 5032 bytes
SHA-256: 1cd77965235a714d20e3726ef4a0905009abda38fa7b8ee76103ea4316f21c24
font_01_sfnt_off00008862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8862 14380 bytes
SHA-256: 453a1200369a97f9c117e55ab3008bd974614aae915bc3b05d6341896083013a

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