Malicious PDF — malware analysis report

Static analysis result for SHA-256 608201f3288096f1…

MALICIOUS

PDF

44.6 KB Created: 2020-08-22 01:01:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54ae68e6e441a836e3b72b5ee27a3754 SHA-1: 90fcd4a4164231f0782e00ad1ff9d930161adcbd SHA-256: 608201f3288096f1643758cf35970788359aa79854a7b931a9362489263a80c3
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one identified as a malicious redirector pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO manipulation tactic to obscure the malicious redirector. The ML classifier strongly flagged this PDF as malicious.

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=video+er+mac+app+store
    • http://wigizolo.casting4growth.com/uploads/1/3/0/7/130738850/tuwawosulom-luzasotuxu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/7205/2643/files/chinese_alphabet_with_english_translation.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/47701113658.pdf
    • https://cdn.shopify.com/s/files/1/0437/4865/5265/files/fobajulizeroturukif.pdf
    • https://cdn.shopify.com/s/files/1/0427/4785/5004/files/xojekujekazob.pdf
    • https://cdn.shopify.com/s/files/1/0448/2108/6368/files/arithmetic_sequence_worksheet_kuta.pdf
    • https://cdn.shopify.com/s/files/1/0432/7145/4883/files/8th_grade_go_math_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/4383/1464/files/carrier_thermostat_manual_wiring.pdf
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/bejudagazuziraveku.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6566/files/sijudabinasulateg.pdf
    • https://cdn.shopify.com/s/files/1/0438/4368/2469/files/cessna_172m_checklist.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_off000065ac.bin
92fc6f1906595a021c78bcddbf16dc71b06ffce5f006aeae5c0785160ced31c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x65AC 4836 bytes
font_01_sfnt_off00007610.bin
497ac35eeca46e75a8474968832167beaa552c933e01eedc5b3846739919d28d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7610 9876 bytes
font_02_sfnt_off000097de.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x97DE 4324 bytes