Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ea969ee43fa8f5b…

MALICIOUS

PDF

55.9 KB Created: 2020-08-11 13:55:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88e967a0f3cedc9db50dac07630d0c1e SHA-1: e22215e82f77a617b19385aeafe464ed321b89f3 SHA-256: 5ea969ee43fa8f5bee4fb812b6902c377e5a4e3125bca6409d31d9d2a58cbed6
170 Risk Score

Malware Insights

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

The PDF contains embedded links and text that impersonate a DHL air waybill template, combined with urgency lures. A critical heuristic identified a link to known malicious redirector infrastructure at https://ttraff.cc/pify. The document also hosts a large number of other PDF files, suggesting a link farm for SEO poisoning or traffic generation. No scripts were extracted, but the presence of malicious links indicates a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=dhl+air+waybill+template+pdf
    • http://dowiwuv.stpeterbaseball.com/uploads/1/3/1/0/131070450/9096279.pdf
    • http://files.sweptpath.com/uploads/1/3/0/7/130739783/9799451.pdf
    • http://files.drtovalane.com/uploads/1/3/2/6/132696077/3722327.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0427/7541/2902/files/galopolegakerafo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2520/2332/files/af_maay.pdf
    • https://cdn.shopify.com/s/files/1/0431/6508/9941/files/discord_name_colors.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/punctuation_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/2885613562.pdf
    • https://cdn.shopify.com/s/files/1/0435/4211/8555/files/breaking_free_workbook.pdf
    • https://cdn.shopify.com/s/files/1/0429/7247/9647/files/93446318102.pdf
    • https://cdn.shopify.com/s/files/1/0432/7319/1588/files/rebaxatusafofexitev.pdf
    • https://cdn.shopify.com/s/files/1/0432/5693/8658/files/orange_justice_roblox_id.pdf
    • https://cdn.shopify.com/s/files/1/0432/7538/7043/files/gogo_scooter_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/8448/9631/files/nuviwuzetegogunabavonobip.pdf
    • https://cdn.shopify.com/s/files/1/0431/3625/4101/files/autodesk_maya_tutorial_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/9751/3381/files/81882540904.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000086e8.bin
4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86E8 2828 bytes
font_01_sfnt_off000090e3.bin
449a2b14eec3243ff4e263618f2bd19f4cdc70f75f66a68857fa1e1a96665238		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90E3 5008 bytes
font_02_sfnt_off0000a1f7.bin
0c2a490514f7a56f03ea1a4671bfbc15c2fc2b54f8cb1db80fd02416c258649b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1F7 9984 bytes
font_03_sfnt_off0000c423.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC423 4324 bytes

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