Malicious PDF — malware analysis report

Static analysis result for SHA-256 4438f6765ef4ba05…

MALICIOUS

PDF

44.4 KB Created: 2020-08-22 20:49:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b7fc055c21042c6712bc0319c67b755a SHA-1: 43f7299f0e795afe0bf65ac8b43917728d1bb4bf SHA-256: 4438f6765ef4ba051f4417211bb951fe159f662cd332b47cab41d38a520dc2e8
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to a URL related to 'cic canada visa application form'. This link is designed to lead users to malicious infrastructure. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which are hosted on Shopify but point to potentially malicious content. The document body, though partially corrupted, also contains the malicious URL.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=cic+canada+visa+application+form In PDF document text
    • http://finuj.jameslimbaugh.com/uploads/1/3/1/6/131607712/a9bef4535c32d.pdfIn PDF document text
    • http://moleseb.shaunpeknic.com/uploads/1/3/0/8/130873951/vokamupitadiju-kuwowejef.pdfIn PDF document text
    • http://tiroje.disruptivenewyork.com/uploads/1/3/1/4/131483492/pemubovosuv_sanab.pdfIn PDF document text
    • http://files.newconnectionsmetrodc.com/uploads/1/3/0/7/130739593/ce12c71.pdfIn PDF document text
    • http://patitama.nicoleadrienneart.com/uploads/1/3/1/6/131606597/durolebekuvokov.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/1/0436/7102/7865/files/bhagwat_katha_in_marathi_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3193/6674/files/pijadazatuwirena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1584/5541/files/sefesijogaverelomokawaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6647/5174/files/nobisarowakonowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8575/8628/files/buvererafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4610/9345/files/bovoxemimibisovebunoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8745/2576/files/47646381859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4464/1685/files/life_in_pieces_episode_guide_season_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/liwukepurenugiweda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0765/3526/files/legonukurabikuzevamef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4256/9382/files/advanced_vocabulary_and_structure_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2508/9191/files/tumigififo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5360/5273/files/fofaluz.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_off00006fed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FED 5264 bytes
SHA-256: 4cbfa2ab0f2e26dbf2c666234c17689029548370448768b69c0e89e32c51166c
font_01_sfnt_off000081b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81B8 10172 bytes
SHA-256: b6885604cfc491befc1811dae09bc55dcce933623581fd54458c6d4a1b120684