Malicious PDF — malware analysis report

Static analysis result for SHA-256 25d51f126de4467d…

MALICIOUS

PDF

55.4 KB Created: 2020-08-01 09:22:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 62825be98cd8e9fe5e566b197615f41d SHA-1: 68682f580d234f9e0bd5e395d78f1316fd228bbe SHA-256: 25d51f126de4467d094b6cd5b1a1df45b44043d2937fa170204157049b0f655c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a link farm designed to manipulate search engine results, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same URL as the malicious redirector, suggesting the intent is to trick the user into clicking the link. The PDF also contains numerous other links to Shopify-hosted PDFs, likely part of a link farm to improve SEO for the malicious redirector.

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=sai+baba+madhyan+aarti+in+telugu+pdf In PDF document text
    • http://files.rem5vr.com/uploads/1/3/1/3/131384098/f45b5f67aedebba.pdfIn PDF document text
    • http://files.kevinhopkinsagency.com/uploads/1/3/2/8/132815054/54bf8a0d0e.pdfIn PDF document text
    • http://files.faithsnotsoaveragelife.com/uploads/1/3/1/4/131407958/ledozaguwejafag.pdfIn PDF document text
    • http://files.clubvaultitudetexas.com/uploads/1/3/1/3/131398252/wewofirinipabup.pdfIn PDF document text
    • http://files.townsonsmithdesign.com/uploads/1/3/1/3/131380138/2981646.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4443/6128/files/wisirazibabipimewonere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/86477918810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0567/2597/files/lapalopogevaxen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7292/9435/files/35797259703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9065/4870/files/dolajoxaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0509/9675/files/55190106777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9673/4880/files/bupedakuxujovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5589/6983/files/budabefadogefafumuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4542/8127/files/62497202079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6451/7023/files/81310740745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/74710931619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/libidurekatomanazavevufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9806/2501/files/kerekirejaxovino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/16704567471.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000725b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x725B 5392 bytes
SHA-256: 5f92da9aa99c0a3ef8df7cc3f22f366090703ce54befb83cbe557c1a28825caf
font_01_sfnt_off00008480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8480 15512 bytes
SHA-256: 540c5eb6e59f1f31d5aea9897bccf43d55994331b00578e2f3fdb488724f2b88
font_02_sfnt_off0000b492.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB492 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
font_03_sfnt_off0000c293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC293 3324 bytes
SHA-256: c75b893f2b6a65f19c4897f9da34380f1679f418ea8b1719fed9092d6494dfad