Malicious PDF — malware analysis report

Static analysis result for SHA-256 03054f3ac1bbe086…

MALICIOUS

PDF

42.7 KB Created: 2020-08-19 06:53:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ad7548592f85a2c25f20df097a56c25 SHA-1: b399837d56a8fe385051f2168fed3070a9880eff SHA-256: 03054f3ac1bbe08651bae55d4480ff5e950b2130481b1f80633a6a66ac7d0a04
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting seemingly benign PDF files. However, one prominent link, disguised as a product manual, redirects to `ttraff.com`, which is flagged as malicious redirector infrastructure. This suggests a phishing or scam attempt where users are tricked into clicking a link that leads to potentially harmful content. The presence of numerous links, including the malicious one, indicates a link farm or redirection strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=braun+series+3+proskin+3080s+manual
    • http://files.lssucatholic.org/uploads/1/3/2/7/132712514/7917210.pdf
    • http://files.mshannahfreeman.com/uploads/1/3/1/4/131409009/wipuperokasibo-xutasomipefuz-zurigem-duboz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/7564/9187/files/bitdefender_antivirus_plus_2017_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/1279/2221/files/55819259953.pdf
    • https://cdn.shopify.com/s/files/1/0438/4486/2114/files/vunojolomusigumewemibawa.pdf
    • https://cdn.shopify.com/s/files/1/0438/4342/0320/files/72677011791.pdf
    • https://cdn.shopify.com/s/files/1/0432/2308/9307/files/pdf_watermark_remover_freeware.pdf
    • https://cdn.shopify.com/s/files/1/0431/8930/5501/files/rules_of_attraction_bret_easton_ellis.pdf
    • https://cdn.shopify.com/s/files/1/0434/5466/0758/files/82236821081.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9432/files/xivogokijoxapugoridur.pdf
    • https://cdn.shopify.com/s/files/1/0435/7187/1912/files/sitakuxafezobibadu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5672/5153/files/69772987587.pdf
    • https://cdn.shopify.com/s/files/1/0434/7035/6637/files/musuxufokamotabaterofa.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006915.bin
0212a468f558089a0bcb04875defe49063d787547c5e0d83dbec9676b25c6b44
pdf-font-stream PDF embedded font (sfnt) at offset 0x6915 5580 bytes
font_01_sfnt_off00007bef.bin
843084386262f0cda22406ec9d7d18a762ac267803e2241ab7876b70e132d019
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BEF 10236 bytes