Malicious PDF — malware analysis report

Static analysis result for SHA-256 677a1a71ee60f30f…

MALICIOUS

PDF

40.1 KB Created: 2020-08-12 10:11:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6db3763680166337badc1a34c43f3aff SHA-1: 31cec3146154bcfafee9b1f4715d57d8283a04b9 SHA-256: 677a1a71ee60f30fcae589f41222e27d0815c6026638c46d843924dba87d3a92
202 Risk Score

Malware Insights

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

This PDF document contains multiple embedded links, including one pointing to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=convert+pdf+to+word+on+ipad+free'. The document also exhibits characteristics of an SEO link farm, suggesting an attempt to drive traffic to potentially malicious sites. The presence of a 'download button' lure further supports the conclusion that the document is designed to trick users into navigating to harmful content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=convert+pdf+to+word+on+ipad+free In PDF document text
    • http://files.tbcwp.org/uploads/1/3/1/8/131871657/2acc866a6414.pdfIn PDF document text
    • http://files.deromelab.org/uploads/1/3/0/7/130740490/3168511.pdfIn PDF document text
    • http://files.dragonchoirs.net/uploads/1/3/1/3/131380504/nebemebiber-gorik-fiwumoxunubowe.pdfIn PDF document text
    • http://zusepew.redwingfirstcov.org/uploads/1/3/2/6/132695329/roneruvogemi-ginemotiseja-jigubi.pdfIn PDF document text
    • http://files.wormfoodforthough.net/uploads/1/3/0/9/130969243/e9c22e71c4f8.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/1/0428/9835/8432/files/22271122494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0553/2569/files/proform_495_pi_treadmill_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3821/8152/files/65517831118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4509/3533/files/wimurewaboziviberarewet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/1613/7376/files/bunenesipagufugiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6345/2583/files/born_free_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/blood_meridian_sparknotes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9610/4348/files/sogofumuwokiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37872338034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/4611439638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2900/3416/files/14852171827.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B7 4884 bytes
SHA-256: 13067ab8c91f478bdf2f10034ec7059f53ee38a90bf7e993f9f47cceebb104c2
font_01_sfnt_off00007175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7175 9932 bytes
SHA-256: 4e1fa81a3b99c9b684edc30e04f00e020c9e2b1ddbd6760eb5837e2a091515c9