Malicious PDF — malware analysis report

Static analysis result for SHA-256 1813cb6f8535d2a3…

MALICIOUS

PDF

33.6 KB Created: 2020-08-12 18:42:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e953346f8d43e8f9c4b12db478a27f0c SHA-1: c78f5e6d3078ac58cbf6ef3ab13232f33583be85 SHA-256: 1813cb6f8535d2a3f8a5e1806becbebc22acad2b5e962dbb96d41865a3df14ed
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. This indicates a phishing or scam attempt, likely disguised as a document download. The presence of a link farm and a redirector suggests an attempt to distribute malicious content or lead users to fraudulent sites.

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=anti+ragging+affidavit+by+student+pdf In PDF document text
    • http://files.shonwilson.com/uploads/1/3/0/7/130776591/gidumubexavabej_lariv_rodijuguzusa.pdfIn PDF document text
    • http://files.mediaactive.org/uploads/1/3/0/8/130873791/jatopamatapezovipo.pdfIn PDF document text
    • http://files.marketmovesmatt.com/uploads/1/3/0/8/130874629/nuvigure-bufagejiv.pdfIn PDF document text
    • http://files.planomidwifery.com/uploads/1/3/0/7/130739719/834170.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/1/0433/0687/7080/files/2934473971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4784/4000/files/doguruguda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3980/7893/files/piwewifovuwexijejafetol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8027/7406/files/61112215647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1283/1907/files/butterfree_gen_3_learnset.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3203/4980/files/bevujij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8982/1845/files/zozoxiputadogowegipive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4873/9740/files/self_mastery_through_conscious_autosuggestion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2834/9089/files/i_believe_i_can_fly_chords.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_off00004417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4417 5468 bytes
SHA-256: 5eac268a527796d37c8360376ec73106839878ef110a4733cbeda8f89681108d
font_01_sfnt_off000056c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56C1 9880 bytes
SHA-256: cef05c9e961886e7eb56c3fe7b426fbb081dd0a52a66c567981906094b593f0f

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