Malicious PDF — malware analysis report

Static analysis result for SHA-256 7787b990cbe1b988…

MALICIOUS

PDF

50.6 KB Created: 2020-08-03 06:15:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 56982bb6d49fea5a481d32a48aadea79 SHA-1: 5822be6045db98ddb103549f8fe4f67efc7ca329 SHA-256: 7787b990cbe1b988091cbca0585809a6fa7a8ba0165e5bf02f27b556f74e7c72
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link disguised as a manual that redirects to a malicious URL, identified as a redirector. This suggests a phishing or scam attempt to lure users to malicious infrastructure. The presence of numerous links to external PDFs, many hosted on Shopify, indicates a link farm designed for SEO manipulation 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.ru/pify?keyword=murray+12.+5+hp+riding+mower+manual In PDF document text
    • http://files.seestheticsinstitute.com/uploads/1/3/1/6/131607062/wukaro_kobapepekirip_kivelogekezaba.pdfIn PDF document text
    • http://files.redwood4h.org/uploads/1/3/1/0/131070420/795727.pdfIn PDF document text
    • http://files.warandthecanadianexperience.com/uploads/1/3/1/3/131379231/pivetufid.pdfIn PDF document text
    • http://files.yunkawasiperu.org/uploads/1/3/1/3/131379612/vizarifogumawov.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/1/0439/0741/6219/files/notes_of_ch_1_chemistry_class_10_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1648/7065/files/75350784209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tepumesuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7848/3096/files/tanukeketoxupir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kovutuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1428/1625/files/xawum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7468/0987/files/mojusiriruma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2991/4012/files/gananumuwizamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75555741983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1816/5144/files/76396218849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7614/8638/files/2535327889.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_off000086cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86CC 5736 bytes
SHA-256: f1d25fa79674faabce6f9fcfc2dcf1bf531018cf16c2e2732f8943ca8967aae5
font_01_sfnt_off00009a5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A5C 10212 bytes
SHA-256: c7d231904cc0aee7a6fbbd9de0e2ef934d29f5a8ad28000ba454ab8b44b8d1c3

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