Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a97d2a535af61c8…

MALICIOUS

PDF

41.4 KB Created: 2020-08-25 15:19:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 91326605c2dcb68bf7258e78f4d65d46 SHA-1: 86837f62a3a7de106b36835e3ec0b62938b2ef81 SHA-256: 2a97d2a535af61c846f6fcb34f97974a05f28d97d45c67717f6b2bb5b01ae0c9
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious infrastructure. The document body text, though partially corrupted, includes the phrase "Kenexa powerpoint 2013 test answers", suggesting a lure to trick the user into clicking the malicious link. The PDF also contains a large number of external links, many pointing to Shopify domains, which is characteristic of a link farm used to distribute malicious content.

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=kenexa+powerpoint+2013+test+answers In PDF document text
    • http://vitatele.cloudhauz.com/uploads/1/3/0/7/130739430/6220830.pdfIn PDF document text
    • http://files.danceconnectionpac.com/uploads/1/3/1/4/131453260/1877503.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/1/0434/0734/3779/files/sojuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9911/7986/files/3692002787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5048/4390/files/magemireduvepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1010/4228/files/xepasovezopujobod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/3475/7531/files/types_of_nouns_with_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9373/7110/files/75445040653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2768/5788/files/39876228556.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4670/7104/files/92957142512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6183/0037/files/wowekozuwolabaxipit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3978/5111/files/leres.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5503/7078/files/52612486141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5675/1002/files/bernoulli_equation_proof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/adelante_dos.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 2

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_off00005e40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E40 5400 bytes
SHA-256: ad54dcb7951fd9760c3f83f3fc0564a13d199e4249606cd18374fe9914b55c5d
font_01_sfnt_off000070c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70C9 12596 bytes
SHA-256: fb7bc3f20017611b25199bd8c511f559016a9b51a70352bf647d7a055b8df615

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