Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fb3883d2c9ce284…

MALICIOUS

PDF

38.9 KB Created: 2020-07-31 11:40:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6c4279ee8cbc43c17c71943d7775c8d4 SHA-1: 09dbd0ae903dc234f26f00cb950f5cf8577ce5f1 SHA-256: 7fb3883d2c9ce284a98e0ec42ae7104e67b92b15f354155d6e5399825f4bb606
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. This indicates a phishing or SEO spam campaign designed to drive traffic to malicious sites. The document body, though heavily obfuscated, suggests a lure related to a musical score, likely a pretext for the malicious links.

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=carol+of+the+bells+satb+pdf+not+angka In PDF document text
    • http://files.sweetspotretreat.com/uploads/1/3/1/6/131637374/negezabiguviruwapi.pdfIn PDF document text
    • http://files.thegrovecg.com/uploads/1/3/1/3/131384777/e9b36cef.pdfIn PDF document text
    • http://files.bigbusinessclass.com/uploads/1/3/0/9/130969340/68adc.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/1/0428/3580/4319/files/26003394807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3844/8548/files/11148126700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6728/5404/files/tituxokegago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3095/3627/files/22330924008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7645/9422/files/28907808809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6585/1560/files/39148913971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5366/2883/files/80650099406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/rojodugolituposuwaxolafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6797/3538/files/jixexisevoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5833/1799/files/22574914544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7438/8119/files/xesesarametiwuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6377/9221/files/febiwozefajarebosur.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 4

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_off00005a0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A0B 5272 bytes
SHA-256: b961332ae01fe83f026fea04c7db37bc19554757db9c4192f23b296bea57a2d9
font_01_sfnt_off00006bed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BED 10032 bytes
SHA-256: efd4ae8d253482b8b4430f3d387e8016a76d1767ec28aff1bf7e0443baac4c1d

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