Malicious PDF — malware analysis report

Static analysis result for SHA-256 1385cc1fc4b5bed7…

MALICIOUS

PDF

70.0 KB Created: 2020-08-18 14:23:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79b3057afa1878a452114ddae8f1a87f SHA-1: e022209d7e87b35d9a6780dfed2cd40091f33759 SHA-256: 1385cc1fc4b5bed76594bf3bc89fa44bfa258fa6d00ebebcc717f783e66022b8
162 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector infrastructure (ttraff.cc). The document body also contains urgency-related text, suggesting a phishing or scam attempt. The presence of numerous external PDF links, many hosted on Shopify, indicates a potential link farm used for SEO manipulation or to obscure the true malicious destination. While no scripts were explicitly extracted, the PDF structure and malicious link strongly suggest an attempt to redirect the user to a harmful site.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=current+acls+guidelines+lidocaine
    • http://nezefaz.evaagnes.com/uploads/1/3/1/0/131071164/8087907.pdf
    • http://files.crystalimagesphotography.org/uploads/1/3/2/6/132696029/fafufalatulife_pisiluwol.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/0318/2231/files/naxerijopasasumom.pdf
    • https://cdn.shopify.com/s/files/1/0431/5581/6599/files/light_novel_arifureta_shokugyou_de_sekai_saikyou_bahasa_indonesia.pdf
    • https://cdn.shopify.com/s/files/1/0434/2608/7064/files/kaveviratudexuga.pdf
    • https://cdn.shopify.com/s/files/1/0437/1863/9765/files/almena_method_of_typing_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/5472/6310/files/35786624036.pdf
    • https://cdn.shopify.com/s/files/1/0431/0358/4409/files/87303493387.pdf
    • https://cdn.shopify.com/s/files/1/0440/2089/1798/files/tisasepavaradilu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3058/5250/files/jonemuwewajojubezizeti.pdf
    • https://cdn.shopify.com/s/files/1/0432/0916/2907/files/xajoni.pdf
    • https://cdn.shopify.com/s/files/1/0439/1396/9819/files/acc_aha_hypertension_guidelines_2018_summary.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_off0000c5eb.bin
c4a09b02a99d44f93d7afc019a36e94b64e961eef5f0db8becb9fd3c08e0ece1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5EB 5012 bytes
font_01_sfnt_off0000d6f8.bin
e098d14a57889f9398622a85c9b309f1865d71e54b5c5473db5988580a595e0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F8 11680 bytes
font_02_sfnt_off0000fce5.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE5 4324 bytes

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