Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef1a3bca6b00258a…

MALICIOUS

PDF

38.0 KB Created: 2020-08-19 11:22:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b322850bcbe76732219ef9ca7e08bb50 SHA-1: a8c93013b853022d1da5b26bb43ad4e32a0e49bd SHA-256: ef1a3bca6b00258aa8ca603601327a6a08d2f2481361bda3650b688ef086c86d
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and a reference to 'Austin and ally songs musicpleer', suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, some of which are hosted on Shopify. The primary malicious URL is used to redirect the user to potentially harmful content.

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=austin+and+ally+songs++musicpleer In PDF document text
    • http://sotoj.sptbc.com/uploads/1/3/1/4/131406798/3029021.pdfIn PDF document text
    • http://files.hillsideswimteam.com/uploads/1/3/0/9/130969424/poveki-pebukoveji-zokujojogepu-fodidupit.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/1/0430/3159/3113/files/56642403629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4031/8375/files/nikilivanobinem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5017/0530/files/risk_of_redundancy_letter_template_uk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9901/2766/files/calculus_for_the_life_sciences.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1828/0357/files/sadadurilulasujegozoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0311/7719/files/wunibavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4124/9690/files/96904409871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6197/6994/files/31868721199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7596/8928/files/43338073143.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
🗂 Part of campaign: hillsideswimteam.com 3 samples

Related samples 2

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_off00004024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4024 5364 bytes
SHA-256: 518ded06cb3ba9df4d37baa159cf20dfdd566db498ed33a66035721fba8bdf04
font_01_sfnt_off00005248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5248 13540 bytes
SHA-256: 306153a14f6c913f7d0f0ef8bbe613dbef2fbfc335cb8fdd9f7ee6fe37872e33
font_02_sfnt_off00007d68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D68 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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