Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f3bbcd36328f92a…

MALICIOUS

PDF

40.4 KB Created: 2020-08-18 18:48:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 696316565edd3b2865a5afec9d674175 SHA-1: 843e992054c190ba6e5280a91151328057a28d28 SHA-256: 4f3bbcd36328f92a8abaf318a66e51d4a9da7f750b1d0df6eb9cddb642f05731
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-Override

The PDF contains a mass external link farm, with the primary link redirecting to malicious infrastructure. The document body, though obfuscated, contains the same redirect URL. This indicates the document's purpose is to redirect users to a malicious site, likely for further exploitation or phishing. No scripts were extracted from this sample.

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.cc/pify?keyword=jnditemplate+lookup+example In PDF document text
    • http://files.plasticfreeswansea.com/uploads/1/3/0/7/130776225/foxosuxovaxukitor.pdfIn PDF document text
    • http://files.penultimatephotos.com/uploads/1/3/1/4/131453990/sekewowuxufiv-fegulogexipewa-vosituxi.pdfIn PDF document text
    • http://totileje.saradps.com/uploads/1/3/1/4/131437627/sofakiwaxukasili.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/1/0433/5704/4904/files/18496816607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1330/6530/files/dudesoxiliwixovun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6350/9141/files/50051640046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7132/3804/files/86398366814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4180/0860/files/ramasor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5879/8492/files/4227715803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8330/8962/files/sivokaletirapuwelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xiguxalenagidofivixonagez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6736/5794/files/51634261913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4267/6648/files/rakedisoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4944/2713/files/kusiturujutadanerobazuku.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 1

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_off000057fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57FA 4952 bytes
SHA-256: 63580d21889dc19ff49f1a49f5134f4d0f2f119d110ea403365d8827db1e8543
font_01_sfnt_off000068c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C1 13988 bytes
SHA-256: c50a9b3c628a6bc1feebe2709c05c91f7e00cb0b064d7007810ad10c90b9f44d

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