Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9c8c7522757cc7e…

MALICIOUS

PDF

42.7 KB Created: 2020-09-18 19:51:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 17753e9f15771d5ca9d579fb7f524148 SHA-1: 129d1e0c492dc48f19a4e04578ed51e67213fb3b SHA-256: a9c8c7522757cc7efcf8592bc60532ca55dbde1885894035c41fd2adec75d80c
202 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though heavily obfuscated, contains text related to 'bank reconciliation' and a URL that appears to be a redirector. The presence of numerous links, including a redirector, suggests an attempt to lead the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/wix?keyword=bank+reconciliation+pdf+philippines In PDF document text
    • http://files.4arrowsoutdoors.com/uploads/1/3/0/8/130814672/1910526.pdfIn PDF document text
    • http://files.pianoincolor.com/uploads/1/3/0/7/130775623/zigozine.pdfIn PDF document text
    • http://fuvununow.joyyangmusic.com/uploads/1/3/1/3/131398140/lawowa.pdfIn PDF document text
    • http://files.edithaliggagne.com/uploads/1/3/1/4/131453213/jemebigemev.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/1/0459/2012/5079/files/worlds_together_worlds_apart_from_the_beginnings_of_humankind_to_the_present.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/andorra_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fadanamimurusekebunom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8993/7055/files/81899204228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4674/7805/files/fernandinho_galileu_dvd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7327/4018/files/puzalonusikamixezebakapu.pdfIn PDF document text
    • https://c0264cd6-f36b-4a04-a49f-715b4c9e66d8.filesusr.com/ugd/575363_030f5b630f9840fd8031ef88e1dcf220.pdf?index=trueIn PDF document text
    • https://35d1e97a-fe1e-4367-8a41-a40e2d439d90.filesusr.com/ugd/b3318b_4387175c60884aba8b9de25c070d2af6.pdf?index=trueIn PDF document text
    • https://0967fe69-7e40-4f8a-9569-b40d70793df3.filesusr.com/ugd/73c254_724fd23bc0124ec69c96cd486802f43a.pdf?index=trueIn PDF document text
    • https://9a610796-13e4-47f2-820d-a38fc3238bb5.filesusr.com/ugd/07e02c_3471d9b420644959aad544dedc00a549.pdf?index=trueIn PDF document text
    • https://56e64247-e2a9-4c55-8388-1cf9e5733892.filesusr.com/ugd/80685d_ae80b83f706247df84ce7c3245401d56.pdf?index=trueIn 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_off0000690c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x690C 5356 bytes
SHA-256: 0f2d4c3e83a19a8212722c74737a72c7e11c15f116fd0ce07efde30438e71882
font_01_sfnt_off00007b43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B43 10112 bytes
SHA-256: c229901b4126ee16fa78d6d9ea43ca82ec234eacc3dfae5dc879ce831e88c30e

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