Malicious PDF — malware analysis report

Static analysis result for SHA-256 183f63345301e216…

MALICIOUS

PDF

47.5 KB Created: 2020-08-20 08:01:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd3055e604a8140e4fe1f9a613ae442b SHA-1: 730ad10b467b725e6a34cf4330bbb2d37f07447a SHA-256: 183f63345301e216203d32214777c67ee5f27238cf5a206eaa86336a72ddea5a
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at `https://ttraff.com/pify?keyword=audio+cutter++for+android`. This suggests the document is designed to lead users to malicious content, likely for phishing or malware distribution. The presence of multiple Shopify-hosted PDF links indicates a potential link farm or SEO manipulation tactic to obscure the malicious destination.

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=audio+cutter++for+android
    • http://bomera.lrmha.org/uploads/1/3/2/7/132712207/nokikupepikoxido.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/ravetogozumag.pdf
    • https://cdn.shopify.com/s/files/1/0433/9299/1399/files/14981696100.pdf
    • https://cdn.shopify.com/s/files/1/0438/4007/7986/files/fakigez.pdf
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/balanceamento_de_reaes_redox.pdf
    • https://cdn.shopify.com/s/files/1/0429/9862/8501/files/juzoderinaguj.pdf
    • https://cdn.shopify.com/s/files/1/0434/5213/7622/files/runecrafting_calc_osrs.pdf
    • https://cdn.shopify.com/s/files/1/0437/8994/2945/files/ncert_biology_class_12_notes_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/ussr_anthem_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000705c.bin
223400c52aad30a8ff2b613b0709faec16f25674cb1b14fc788f573f335960e2
pdf-font-stream PDF embedded font (sfnt) at offset 0x705C 4676 bytes
font_01_sfnt_off00008040.bin
033d86f87086988b9923e40a5342403e387d54b25083b4a27ecd421304986a51
pdf-font-stream PDF embedded font (sfnt) at offset 0x8040 10312 bytes
font_02_sfnt_off0000a386.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA386 4324 bytes