Malicious PDF — malware analysis report

Static analysis result for SHA-256 bac83d0b1fe230d0…

MALICIOUS

PDF

49.0 KB Created: 2020-08-26 18:30:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86261319eb11739fcdb7bc44a62179e6 SHA-1: 3984bf74974df3c27dfb6a1218fb28a5a3648f4d SHA-256: bac83d0b1fe230d0d04e515ff4e1179b63124c31f7b76e97a1eefe5190c01c77
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the embedded links redirects to a known malicious domain (ttraff.com), indicating a phishing or redirection attempt. The document body, though heavily obfuscated, contains text related to 'jazz improvisation for guitar' and the wkhtmltopdf generator, suggesting a lure to disguise the malicious intent. No scripts were extracted from this sample.

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=jazz+improvisation+for+guitar+a+melo In PDF document text
    • http://rulefife.caitlin-cannon.com/uploads/1/3/0/8/130874368/735b392217b3.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/1/0432/6277/1366/files/advanced_english_vocabulary_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0820/4704/files/sotatagidatafumikizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8568/5153/files/67092865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7988/4186/files/37142298749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9513/7187/files/79144403139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1887/8114/files/saxegax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7710/5832/files/federalists_and_anti-_federalists_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0951/5413/files/canvas_painting_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0571/4338/files/puzosesuniligewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6495/0945/files/36454340895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7974/6201/files/zigibe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1479/7981/files/24690169100.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_off00006cc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC4 5320 bytes
SHA-256: 01418cd3ae6844c5e19698e8de1dcf2816a3afa0617c1f7df726dd3119257cc2
font_01_sfnt_off00007ed6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED6 10132 bytes
SHA-256: d1fc8591c8f250812f5cf6d97afdae96021b094f91034616e2460130e9ba91f8
font_02_sfnt_off0000a1c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1C0 16200 bytes
SHA-256: 9527d77a8ddbff7143f4b9d9ffa6a9c0a17c14fbd864be9d9139927b2451880e

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