Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3fd5ed3c623a8fb…

MALICIOUS

PDF

45.7 KB Created: 2020-08-01 16:08:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8e0ea772092b335872877ef947858769 SHA-1: 50ff0ce81d30ae55302b71ae34a93600bc97b63d SHA-256: a3fd5ed3c623a8fb341506ba245e27e5298fc59135f7c4a9a318bb4a2a8ee700
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=hp+office+pro+8600+download'. This URL is presented within the document body, disguised as a download link for HP Office Pro 8600 software. The file also exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains. The primary malicious IOC is the redirector URL, which likely leads to a further stage of the attack.

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=hp+office+pro+8600+download In PDF document text
    • http://files.orderriseup.com/uploads/1/3/0/8/130813398/sojakegapar-lutosibis-napive.pdfIn PDF document text
    • http://files.jsaadsales.com/uploads/1/3/1/3/131380511/zinutisogeb-dutisikimivovug.pdfIn PDF document text
    • http://files.goodshepherdreading.org/uploads/1/3/2/7/132712214/nevuperek_wojozoguxez.pdfIn PDF document text
    • http://files.chrislockett.com/uploads/1/3/1/8/131871772/aae4f0375.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/1/0429/6241/9863/files/75910819320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tikodizexosuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pinabazebovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8761/8463/files/bijaduvetisuvigeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8321/9619/files/49647460185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3017/4113/files/41521894881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8830/5575/files/mewatuxivonuzina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/54238798792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/52790064602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9051/7917/files/surixivezot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7237/3414/files/kidurezutemonunijawapow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0820/4704/files/15276553114.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_off000068c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C7 5512 bytes
SHA-256: e03e65d786f22d888cf05761df74528e6f076cc53eaa502551dd74534e6a0e31
font_01_sfnt_off00007bab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BAB 15020 bytes
SHA-256: d7c30a1fb420bc4846130f11169b93718a3ccce36ba36184e60c34dc7f33fb21

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