Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc16b4f6300d322d…

MALICIOUS

PDF

46.5 KB Created: 2020-08-22 17:15:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b3701f24b0c06eaea14775b76af11c1b SHA-1: 5aab6e50c7beef7d76db02db5f4d3c633bf2f5e7 SHA-256: bc16b4f6300d322dbf859f5caaa7b258a380b1f6da3e28bebf48cb370d0b48d7
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.cc, disguised as an 'annual return report malaysia'. It also features a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to obscure the malicious destination. The ML classifier strongly indicated maliciousness, supporting the conclusion that this document is designed to lead users to 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.cc/pify?keyword=annual+return+report+malaysia In PDF document text
    • http://fulovova.cindykollerphotography.com/uploads/1/3/1/4/131437871/1798451.pdfIn PDF document text
    • http://files.azkillerbeessoftball.com/uploads/1/3/0/8/130874518/jemizip.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/1/0433/5792/9621/files/17212294149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5813/3152/files/3964107680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/0725/9302/files/cartina_turistica_puglia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/5431/3122/files/types_of_occupational_diseases.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0157/6604/files/25965639479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5572/4197/files/wiley_addiction_treatment_planner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7084/9181/files/81587777703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5969/2198/files/install_scikit_learn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9660/2779/files/40115154493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8039/3639/files/api_console_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7342/8888/files/enter_usb_bluetooth_dongle_driver_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42778981568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7356/8919/files/11194480204.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005edf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EDF 3548 bytes
SHA-256: 36f9d5ef2978219ed42da47ed6f5b471aa2ebc7518b6c3702ccb7d74811e4823
font_01_sfnt_off00006b94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B94 4940 bytes
SHA-256: 5d8df620c56723658ce6fec841c6322a3af26a4120d899a8248886498cdd00f1
font_02_sfnt_off00007c3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C3E 9948 bytes
SHA-256: d30962545e0f0140803dfeb48677a5fbfc4da9994ba00bb3bf51ce1105a6ec31
font_03_sfnt_off00009e4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E4A 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176