Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb7a6ffbd5ea681f…

MALICIOUS

PDF

37.6 KB Created: 2020-09-09 19:07:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0d785786e4691dd19bf92ff448a2e00 SHA-1: 0c70b08b15cd1cad148ff3086d8f343fa679df80 SHA-256: cb7a6ffbd5ea681f74ee2693d1b1b5e7203ac6cc8fd3df101bdf1caa18ad226c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that redirects to a link farm, aiming to trick users into downloading more documents. The primary redirector URL is associated with malicious activity. The document body, though heavily obfuscated, contains references to the redirector and other PDF files hosted on Shopify, suggesting a phishing or content-farming lure.

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.link/pify?keyword=guardian+quick+crossword+15067+answers In PDF document text
    • http://files.thelinksconnection.com/uploads/1/3/1/8/131872273/pozus.pdfIn PDF document text
    • http://files.fireflies-and-blossoms.com/uploads/1/3/1/6/131637150/1202714.pdfIn PDF document text
    • http://files.missmackeysclassroom.com/uploads/1/3/1/1/131163960/0aff56.pdfIn PDF document text
    • http://files.journeythroughlifeministries.net/uploads/1/3/1/4/131406893/fojawijoz_lakezetikiru.pdfIn PDF document text
    • http://files.thebeveragebutler.com/uploads/1/3/1/4/131438059/63211.pdfIn PDF document text
    • http://files.healthycommunitiescoalition.com/uploads/1/3/2/6/132681851/719654.pdfIn PDF document text
    • http://files.laurylgaumer.com/uploads/1/3/0/7/130739081/117722.pdfIn PDF document text
    • http://zomibapug.fayettelawyer.com/uploads/1/3/2/6/132696280/bb6dc219.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/1/0433/9371/2286/files/nubobotib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8648/7455/files/form_7_star_wars.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46150969179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1000/6940/files/lufeladow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4363/5879/files/88411030285.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/55f640_148d2977c6b94b71853c6f21439457ef.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/6240f8_7ff35e2598e74845be4ed75f812fd5de.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000534f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x534F 5764 bytes
SHA-256: 455b4f8486c5c3c6effd0e0b045f0761488953d751e2aecb6c0c4481447a3773
font_01_sfnt_off00006727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6727 10120 bytes
SHA-256: 2890144a45f4f1ea11a66971a478faa5b71fc6fab935033080e43036e1f785b8

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