Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce0214fe6a359d6d…

MALICIOUS

PDF

44.5 KB Created: 2020-08-12 09:34:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 140fcb961210ed410c2c49fc2b3d1989 SHA-1: 96b1e5d8e9cdc170846e896df96a349e150c816e SHA-256: ce0214fe6a359d6df42bd4afc4a11bf6b1532f1c32ca6164897e5d2ae244f9ab
152 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'ttraff.cc'. Another critical heuristic noted a large PDF link farm, with many links pointing to shopify.com domains. The document body contains text related to adding text to PDFs and mentions wkhtmltopdf, suggesting a potential lure for users seeking document manipulation tools.

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=add+text+to+pdf+free+reddit
    • http://files.eprockpg.org/uploads/1/3/1/0/131070362/mudebikixage.pdf
    • http://files.houseofdiamondsart.com/uploads/1/3/1/4/131437937/gidim-tenidiziviwo-forenidonavod-guforufope.pdf
    • http://files.januszsupernakwebsite.com/uploads/1/3/1/3/131380171/fatukimelak.pdf
    • http://files.ecolededanselorrainewalker.com/uploads/1/3/1/6/131606965/keramazevu.pdf
    • http://files.purebarretexasstrong.com/uploads/1/3/2/6/132695347/0653a9d919.pdf
    • https://cdn.shopify.com/s/files/1/0431/4028/4583/files/wogagebemuxaweferugog.pdf
    • https://cdn.shopify.com/s/files/1/0429/3941/6732/files/canon_t5_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/5516/9182/files/ravapibapinam.pdf
    • https://cdn.shopify.com/s/files/1/0433/8640/5029/files/miripox.pdf
    • https://cdn.shopify.com/s/files/1/0431/1613/4551/files/88439575422.pdf
    • https://cdn.shopify.com/s/files/1/0431/6335/3250/files/23625776137.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doworefobose.pdf
    • https://cdn.shopify.com/s/files/1/0431/5011/4965/files/syntactic_structures_by_noam_chomsky.pdf
    • https://cdn.shopify.com/s/files/1/0436/6496/5782/files/webupemo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5788/8932/files/fesagasezat.pdf
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/sufobevekafon.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/64989875230.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_off00006451.bin
a0db24077677bb66c095ec2eca8b695dc896c9eae0daf74fe28e0e29c2ab7365		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6451 4356 bytes
font_01_sfnt_off00007331.bin
0e3a819844889dee8923a3f313549fddcfeea74885f5c69da0a7843d0d4b6a89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7331 10636 bytes
font_02_sfnt_off00009708.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9708 4324 bytes

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