Malicious PDF — malware analysis report

Static analysis result for SHA-256 377fa70c699f5d46…

MALICIOUS

PDF

45.9 KB Created: 2020-08-14 20:11:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 20e88266e6761df8071de0f37a9058b0 SHA-1: d7118632d050fd9984825ee3d63441889e4eb87b SHA-256: 377fa70c699f5d462fc9362b6560a7879c0be7d1b187590c6096a7cc39f6d85e
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to funnel victims to further malicious content. The document body, though heavily obfuscated, contains the same lure text and URLs found in the heuristics, suggesting a social engineering attempt to trick users into clicking the malicious link. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to improve search engine visibility for the malicious lure.

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=papa+calling+ringtone+free In PDF document text
    • http://files.samdillonmusic.com/uploads/1/3/0/7/130776589/cb44f.pdfIn PDF document text
    • http://files.comedianjordanjackson.com/uploads/1/3/1/0/131070231/f07599f3.pdfIn PDF document text
    • http://pepofe.tomrkt.com/uploads/1/3/0/8/130814297/13d7f8361d9.pdfIn PDF document text
    • http://files.professorwillis.com/uploads/1/3/0/9/130969819/3536095.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0724/4450/files/47141207480.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27360052690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/25402838326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6453/9798/files/53279490149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2007/4663/files/bibagemize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8942/0695/files/73708383138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3182/9412/files/64591889640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8986/0510/files/17077544306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/79147429430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0974/4789/files/60320118089.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C2 4792 bytes
SHA-256: 68c43967e3f82006785c304f4a3bde0f6d4c401c9c44b6847632e527475b6feb
font_01_sfnt_off0000790d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x790D 10532 bytes
SHA-256: 270fe7dd4cef02c0fa4fbd5d1d89d7eef97650b8821df160bc2140a609ae4374
font_02_sfnt_off00009cd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CD3 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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