Malicious PDF — malware analysis report

Static analysis result for SHA-256 81bc16844ddacf03…

MALICIOUS

PDF

38.2 KB Created: 2020-09-13 07:39:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 00c46b345d72a9c665d6b4b94b9ef9ae SHA-1: bf8b9c9fa8adc43015d3474d804453cc75973d37 SHA-256: 81bc16844ddacf03317203c14cf80f42dc61e2faf1ef5445852a6b46c9ec497d
194 Risk Score

Malware Insights

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

The PDF contains embedded links, including one pointing to a known malicious redirector at 'https://ttraff.link/wix?keyword=lace+on+steering+wheel+cover+tan+leather'. The document body, though heavily obfuscated, contains this URL, suggesting an attempt to trick the user into navigating to a malicious site. The presence of numerous external PDF links, many pointing to Shopify, further indicates a link farm or phishing attempt.

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.link/wix?keyword=lace+on+steering+wheel+cover+tan+leather In PDF document text
    • http://files.magicmangocreation.com/uploads/1/3/2/3/132303170/ralowotero.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/1/0438/7949/7896/files/70353156113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8969/0773/files/48042212670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/33575668744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2728/9496/files/82468927931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/9643/5875/files/dedobudodeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2275/1643/files/begatobepiradumuvonomid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5727/4270/files/inverted_sentence_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1143/2857/files/zorisuvomobalukafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7864/7957/files/97690681795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3517/6608/files/seismic_unix_manual.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/762c1a_ce194a3c8d3546e19827d6518186dd9c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/8d57bd_41048acfa4e647a886f082bb54297ef1.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/16879a_6321af1d4f68444aafd9cbb8030a0734.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/4b68be_aa2c8a1bead04f81ada9e0b76ac5e072.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 1

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_off00004a4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A4F 4940 bytes
SHA-256: dd70b54313b82e97d31b67fd37bc458c8014027df3ecb8a22811f1843383d054
font_01_sfnt_off00005b22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B22 10068 bytes
SHA-256: a0e6797d715d64e225490723f19cca36088c43cecc90f8bfd9d7122920cc0d84
font_02_sfnt_off00007d77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D77 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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