Malicious PDF — malware analysis report

Static analysis result for SHA-256 82e8afae96f95e48…

MALICIOUS

PDF

44.6 KB Created: 2020-08-11 12:44:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 397bb6b648aa3db8662bdb2d6fbca1b0 SHA-1: a2fdfa746e0e685554cc566b07e2e2398e94b384 SHA-256: 82e8afae96f95e48dffa1f9f461d08bd314928dc61ff3fbff464487c3201f62b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with the primary URL pointing to a known malicious redirector. The document body, though malformed, includes the search query 'Boeing 737 cockpit layout pdf', suggesting a lure to drive traffic to the malicious site. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or traffic-driving campaign.

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.ru/pify?keyword=boeing+737+cockpit+layout+pdf
    • http://files.lovephukettours.com/uploads/1/3/1/6/131606059/126415.pdf
    • http://zotiti.brooklyndreadlocks.com/uploads/1/3/0/8/130814328/saxuvaxalulik.pdf
    • http://files.joanlinnehan.com/uploads/1/3/2/8/132814250/raluzowuloz.pdf
    • https://cdn.shopify.com/s/files/1/0430/7976/2073/files/60260379050.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/xodamomoxokekegasisax.pdf
    • https://cdn.shopify.com/s/files/1/0441/2515/9576/files/goruxavobebos.pdf
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/headway_beginner_test_booklet_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0435/5099/8679/files/ataullah_iskenderi_hikem_i_ataiyye.pdf
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/15254330176.pdf
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/novakuvuzurikubax.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/xuwitogodituremavowira.pdf
    • https://cdn.shopify.com/s/files/1/0448/0407/9778/files/capitalismo_que_es.pdf
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/fofulazenitidej.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/geligup.pdf
    • https://cdn.shopify.com/s/files/1/0431/5915/8938/files/95547313494.pdf
    • https://cdn.shopify.com/s/files/1/0432/2813/5592/files/bamizizupidonav.pdf
    • https://cdn.shopify.com/s/files/1/0434/7117/5846/files/misesirazevogimititukoke.pdf
    • https://cdn.shopify.com/s/files/1/0436/7079/8489/files/nixamuxoxivipexomaked.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e70.bin
d6fb220d9ccf546ae62bb8987489760d94b30beb37306ae6d24f33a010b973a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E70 5508 bytes
font_01_sfnt_off0000815b.bin
c2e7dfcb43c78dbcd9122b792d41e37b59abd0bfd5e7b807defe8cd3c1e06d9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x815B 10604 bytes

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