Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d4fc60212f87ef9…

MALICIOUS

PDF

44.5 KB Created: 2020-08-17 10:16:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0e3fdbe9cd926db54926492cfec33b75 SHA-1: 380fd21f6c3f859ae25004beff248b224ed0d6c9 SHA-256: 2d4fc60212f87ef98eb16eaa51a6e7dc306662742b171f9ae6752f73d48e4314
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=barcelona+video+song'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs hosted on domains like cdn.shopify.com. The document body, though partially corrupted, contains the same malicious URL, suggesting an attempt to lure users to a malicious site, likely for phishing or malware delivery.

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=barcelona+video+song
    • http://files.bluesense-water.com/uploads/1/3/1/6/131636601/pidaduvikebi.pdf
    • http://files.lifeworthmentor.com/uploads/1/3/0/7/130739919/robukodagidezuvoze.pdf
    • http://binisuke.misterspas.com/uploads/1/3/2/3/132302926/4518bca80087404.pdf
    • http://files.3principleswales.com/uploads/1/3/1/0/131070109/rabevi-mojedag-jukob-munadituwagiga.pdf
    • http://files.zacharyjblum.com/uploads/1/3/1/6/131637136/nixotopad-rukikivu.pdf
    • http://files.3principleswales.com/uploads/1/3/1/0/131070109/ra
    • https://cdn.shopify.com/s/files/1/0437/6834/8830/files/zurawajifuwuki.pdf
    • https://cdn.shopify.com/s/files/1/0429/5553/8591/files/joint_commission_international_accreditation.pdf
    • https://cdn.shopify.com/s/files/1/0433/7650/9080/files/97591665095.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/nibafopipedatukunobofaru.pdf
    • https://cdn.shopify.com/s/files/1/0428/6119/9526/files/dagujiju.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/ecological_importance_of_species_diversity.pdf
    • https://cdn.shopify.com/s/files/1/0427/9179/6902/files/sarafekipobumazebigip.pdf
    • https://cdn.shopify.com/s/files/1/0433/4750/9416/files/3249446261.pdf
    • https://cdn.shopify.com/s/files/1/0434/2906/8949/files/pevikitaxefozoze.pdf
    • https://cdn.shopify.com/s/files/1/0432/4219/3058/files/tezakasanifu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063da.bin
ae5a8dd42fb16a66a04fa3cbb6adae6fdc023321372d86f74d54e7d02fbb9522		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63DA 4924 bytes
font_01_sfnt_off00007494.bin
a3e0bbbe899506e5ebf01551d1bf446feebccf3d3ac06cd94f2c439cc7fabf2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7494 10072 bytes
font_02_sfnt_off000096ca.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96CA 4324 bytes

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