Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e8911683cca262f…

MALICIOUS

PDF

44.8 KB Created: 2020-08-11 06:59:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d81ae3737d2982f989ec273641c4b661 SHA-1: 79ca00b6b28128f983c807dcee9a9e1e03776c55 SHA-256: 5e8911683cca262fdbb889e0e3e5c1534c3685deef4ed6d28cf51f4f74ff4d0d
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) known for malicious activity. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'ms pipe class a b c chart pdf', suggesting a phishing or scam attempt. The presence of a large number of PDF links indicates a link farm SEO tactic, likely to obscure the true malicious destination.

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=ms+pipe+class+a+b+c+chart+pdf In PDF document text
    • http://files.silverjewellerybypeterkibbles.com/uploads/1/3/1/3/131381607/zojawuxa-wofixuj-fajesiloraju-jedakumo.pdfIn PDF document text
    • http://files.buespta.org/uploads/1/3/1/8/131857914/tetapajepat_rodapi_zidotebuma.pdfIn PDF document text
    • http://files.dougsheat.com/uploads/1/3/0/9/130969576/8469915.pdfIn PDF document text
    • http://netoj.seitecclimbhigher.org/uploads/1/3/1/4/131406082/5423305.pdfIn PDF document text
    • http://files.digistormers.com/uploads/1/3/1/0/131071256/gugozuvifalok.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/1/0435/5257/1555/files/causas_do_aneurisma_cerebral.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5329/3469/files/36886509898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/30818979582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/15817315674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/62009540155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3462/4679/files/vumojipikunabulirawowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6673/7311/files/xebuniwotapuribawere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7304/4642/files/woxilumax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8362/8697/files/72093544931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6431/0425/files/78088281378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/74265827227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/59260897737.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 7

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_off0000649e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x649E 5388 bytes
SHA-256: dfce3e7c1cb50f39b4570eb0ec182b5e306dc924efb59de775fdcb6a1d5cae14
font_01_sfnt_off000076e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76E4 15128 bytes
SHA-256: de7c03710142cb0f9940e0ac7d35c3e396fc52a9e1519241bf9369c66a82d1a9

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