Malicious PDF — malware analysis report

Static analysis result for SHA-256 1413188194dfa777…

MALICIOUS

PDF

44.3 KB Created: 2020-08-06 01:23:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d3738b40979d5557fa0eaa321727d9df SHA-1: fcb4251fdfb48d03713d6d8968591c42d6a9d61c SHA-256: 1413188194dfa77799a67fb93776a9b4b9fdae019159e43356ad30a2fda1e649
154 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to what appears to be a link farm for PDF downloads. One prominent link, 'https://ttraff.cc/pify?keyword=intentional+living+john+maxwell+free+pdf', is identified as a malicious redirector. This suggests the document's primary purpose is to trick users into clicking malicious links, likely leading to further compromise.

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.cc/pify?keyword=intentional+living+john+maxwell+free+pdf
    • http://files.187hudsoncliffs.org/uploads/1/3/2/6/132695351/1276611.pdf
    • http://files.hashomershnat.org/uploads/1/3/0/9/130969847/fogudara.pdf
    • http://files.seendclt.org/uploads/1/3/1/1/131164176/a0634451.pdf
    • http://files.worldstringsday.com/uploads/1/3/1/4/131437657/wanefupaso.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/8044/1238/files/the_pharmacy_technician_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0436/4160/2208/files/66468021891.pdf
    • https://cdn.shopify.com/s/files/1/0437/3282/8314/files/13444830451.pdf
    • https://cdn.shopify.com/s/files/1/0431/7613/2774/files/73804614416.pdf
    • https://cdn.shopify.com/s/files/1/0431/4978/7285/files/dibavoperabixuveseron.pdf
    • https://cdn.shopify.com/s/files/1/0438/1373/2512/files/90612696068.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/57319858027.pdf
    • https://cdn.shopify.com/s/files/1/0433/4131/6264/files/bender_gestalt_test_scoring.pdf
    • https://cdn.shopify.com/s/files/1/0432/9819/3573/files/49417722036.pdf
    • https://cdn.shopify.com/s/files/1/0430/1137/5267/files/feboj.pdf
    • https://cdn.shopify.com/s/files/1/0438/3955/3696/files/27731853242.pdf
    • https://cdn.shopify.com/s/files/1/0435/1728/0408/files/pupigivedixagubadebetu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9051/7911/files/tegul.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b47.bin
68de88c028d6af36854b1ed350e6e1d425ce575ec9cc8b8b4a951f7d93ec87f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B47 5508 bytes
font_01_sfnt_off00007e01.bin
bfe602469035e84e656ac17eb91b0e4504e1d3bc64cb233d053c2b78265f3b40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E01 11284 bytes

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