Malicious PDF — malware analysis report

Static analysis result for SHA-256 a974a566b764753f…

MALICIOUS

PDF

40.3 KB Created: 2020-08-18 14:09:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 09cb4aa288bac58b1081821fe09d3540 SHA-1: ffc675b4d90503c0be8e7322ed26f859697ae0cf SHA-256: a974a566b764753f4a47a12a64232e0f81f20026788a0c9b4e0c29569915aa8d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link that redirects to a malicious URL, disguised as an Android update lure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of the redirector. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many hosted on cdn.shopify.com, suggesting a link farm used for SEO poisoning or distributing malicious content. The ML classifier also strongly indicates maliciousness.

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.com/pify?keyword=aggiornamento+android+9+lg+g6 In PDF document text
    • http://repimi.microhydroassociation.org/uploads/1/3/1/4/131406153/8008553.pdfIn PDF document text
    • http://files.jonimurphyartist.com/uploads/1/3/1/8/131872048/zunidogoxub.pdfIn PDF document text
    • http://files.davevyespiritualmedium.com/uploads/1/3/2/8/132814241/8087496.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/1/0444/3452/2279/files/58438886027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4929/4756/files/wrist_physio_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9316/4199/files/70619602467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/advantages_and_disadvantages_of_direct_tax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9357/3284/files/79832466248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4713/1035/files/bullets_for_ms_word_2007_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/don_t_follow_alice_in_chains.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/temavaruwafum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4976/3494/files/pumipizade.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 3

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_off00006019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6019 5268 bytes
SHA-256: efb23228a3be0342141fe82d9e37f0a3252eea6baa07bddc8ee2ec08b64433c0
font_01_sfnt_off000071db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71DB 10112 bytes
SHA-256: 472cb467a7c996a371be3f6b5155c4f75c2560e97c096788e21cebb97467bf35

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