Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d9b687290526e64…

MALICIOUS

PDF

42.7 KB Created: 2020-08-19 00:47:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d5850981ea1a68c038865ca9c02c84c1 SHA-1: f6f7b164acd886f7f6bc50d078839bdb16b3a45b SHA-256: 7d9b687290526e646ecaa88f1051b2dd734bb73d757e282993fd29f7348ecbdd
194 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to redirector infrastructure. The primary redirector URL, 'https://ttraff.ru/pify?keyword=auto+tune+free++for+android', is flagged as malicious and associated with SEO link farms, suggesting a phishing or malware distribution lure. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. No scripts were extracted, but the extensive use of redirectors and link farms indicates a coordinated effort to lead users to malicious sites.

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.ru/pify?keyword=auto+tune+free++for+android In PDF document text
    • http://sanorupo.nooracademyomaha.com/uploads/1/3/0/9/130969723/lizag.pdfIn PDF document text
    • http://kegowar.mslacroix.ca/uploads/1/3/1/6/131636664/tabutulezobosi_vetowadovod.pdfIn PDF document text
    • http://xeladavaz.gracebubeck.com/uploads/1/3/1/3/131384481/b1675fd.pdfIn PDF document text
    • http://fedupeto.anewbeginningpreschool.com/uploads/1/3/2/8/132815367/nadubidabit.pdfIn PDF document text
    • http://files.dapstempest.com/uploads/1/3/0/8/130874496/joxuwejojisiji-maxariripavo-kakad.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/1/0433/2106/5640/files/rezofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1579/7917/files/wopunujib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8537/9237/files/carpal_tunnel_hand_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1284/0872/files/71818649558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/xbox_one_controller_button_layout.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6394/3074/files/82293713048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1079/3382/files/google_drive_link_with_idm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0678/6725/files/3973477021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4628/1121/files/41415714783.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2017/2960/files/78744110289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0872/1045/files/weruziwudenabejidomozaxad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6224/7080/files/6448520167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2515/9576/files/votavilizixizurokelider.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2071/4137/files/marigolds_short_story.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_off00006b66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B66 4680 bytes
SHA-256: 309177bbb0588475ed9ddd9c3f767dfb0f6fff4478d440d7ca83fe757ebc33a9
font_01_sfnt_off00007b60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B60 10104 bytes
SHA-256: c99feb2edfb8e87c8c26f8ef7ccc54ec0af2ab6f21e3603bb017e48f0e91732f