Malicious PDF — malware analysis report

Static analysis result for SHA-256 89bcc1a6404483b0…

MALICIOUS

PDF

53.0 KB Created: 2020-08-03 05:21:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c49a7cc6b604c030e1ec3a9a19cdea29 SHA-1: 047b2d5eda778b79d741ef4fc0c83a9cd745cd52 SHA-256: 89bcc1a6404483b0012070b4107ecbd98a9ea96f233d02891454c392cf60914e
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external PDFs, many of which are hosted on Shopify and appear to be part of an SEO link farm. One prominent link, 'https://ttraff.ru/pify?keyword=army+manual+dispatch', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to redirect users to malicious infrastructure. No scripts were extracted, but the heuristic firings strongly indicate a malicious redirection attempt.

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=army+manual+dispatch In PDF document text
    • http://files.ecpmog.com/uploads/1/3/1/0/131070178/nigujulujo_lipebagerefibo.pdfIn PDF document text
    • http://files.globalconnectionskenya.org/uploads/1/3/2/8/132814147/fb239.pdfIn PDF document text
    • http://magedes.artspark.com/uploads/1/3/0/7/130775403/3df5cea2e.pdfIn PDF document text
    • http://files.stellenboschholidayvillas.com/uploads/1/3/1/4/131437091/3754143.pdfIn PDF document text
    • http://files.rosanaourens.com/uploads/1/3/1/4/131453574/7de7b.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
    • https://cdn.shopify.com/s/files/1/0432/1764/9819/files/20272415657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5206/3125/files/golozoponepojumot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1065/2317/files/game_of_thrones_english_subtitles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86556218032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6593/3985/files/windows6._0-_kb4012598-_x86._msu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6839/1577/files/tensorflow_version_check.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1218/5502/files/72901083937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23535065851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9610/4348/files/xofabuwajedegiveli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8268/6367/files/64138142103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8279/2606/files/54871958886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6176/2456/files/86630331360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3103/5032/files/bamukenusamasupeze.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000084ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84AB 5056 bytes
SHA-256: ff5e16def0e07a54caf2af90ffd48afe7fdd9aa3f378b4d3150601e4fa468412
font_01_sfnt_off0000959d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x959D 10228 bytes
SHA-256: 10284efb638ab1a875269760156c143ef7e2329e2fd08c7b3763dc64b7b9cd95
font_02_sfnt_off0000b87e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB87E 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176