Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa76c5b4b01cc2ee…

MALICIOUS

PDF

50.8 KB Created: 2020-08-16 15:41:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 31074bfaf4c871cca5930b56944fc360 SHA-1: cbd5f93ca78360f20895fac0d509021de66f981b SHA-256: fa76c5b4b01cc2eef2b7d3d391655b732ecef347f64942a88106dbf678dbd580
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious infrastructure at 'ttraff.ru'. This suggests a link farm or SEO poisoning tactic to distribute malicious content. The document body, though heavily obfuscated, contains the target URL, indicating an attempt to lure users to potentially harmful content under the guise of providing piano sheet music.

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=piano+sheet+music+easy+classical In PDF document text
    • http://files.online-workouts.com/uploads/1/3/1/4/131452771/rixotibexipe.pdfIn PDF document text
    • http://junoz.solutionfm.com/uploads/1/3/1/4/131453177/53a78.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/1/0437/3220/5722/files/91362290853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3566/4284/files/20008466296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7752/3861/files/jessore_board_jsc_2017_marksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8179/3698/files/51164139983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1058/7800/files/godomagowazoluzoxidedid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5657/8206/files/85515154972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mejiwevabefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5745/3985/files/personality_disorders_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7152/0409/files/23503038261.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70CF 5044 bytes
SHA-256: e48a1d03567a99e619093387f861dc1305327e2215d3c5bdd7fcad5338d91a61
font_01_sfnt_off000081d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81D4 12108 bytes
SHA-256: 2a2e3fc29002b81fc8636671ef3063685fc54d17b4cfbec1b2009d42d003490c
font_02_sfnt_off0000a958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA958 16100 bytes
SHA-256: 84650fe671c70ac66f3af0994468c9b9feb42d01905b0f030d5781e095ef8e52

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