Malicious PDF — malware analysis report

Static analysis result for SHA-256 567e44e64ddf9225…

MALICIOUS

PDF

41.0 KB Created: 2020-08-25 17:43:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d517f74596ddd545bf9e16b834a4453c SHA-1: 9d51e6050f6ec2704211196cfb15d912e4f55c7a SHA-256: 567e44e64ddf922509639e2cced7cd658101014d29aff86c48bff648e03e4f69
152 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one critical heuristic identifying it as a link farm designed to manipulate SEO or redirect users. The presence of a link to known malicious redirector infrastructure further supports this. While no scripts were extracted, the sheer volume of links and the malicious redirector suggest an attempt to lure users to potentially harmful content.

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=lspdfr+variety+callouts
    • http://jafatuse.wcorbin.net/uploads/1/3/2/7/132712354/fatanep.pdf
    • http://libuvomi.hope-medical.org/uploads/1/3/0/7/130775505/kawelizedez_liledelojod_bobufowakotewef.pdf
    • http://webed.moodyplumbinginc.com/uploads/1/3/1/4/131438044/3458667.pdf
    • http://files.workpurposefully.org/uploads/1/3/1/6/131606490/pavaloxoroge_pabasani.pdf
    • http://benufafi.ridgeandvalleyreptiles.com/uploads/1/3/2/6/132680835/d8e528.pdf
    • https://policemp.com
    • https://cdn.shopify.com/s/files/1/0462/5960/1562/files/sigigowosefizuwa.pdf
    • https://cdn.shopify.com/s/files/1/0430/1642/1529/files/14497183565.pdf
    • https://cdn.shopify.com/s/files/1/0428/7650/2175/files/khatu_shyam_ji_bhajan_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0432/7017/6932/files/mcdonalds_job_application.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/clinical_trials_ophthalmology.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/manuwasezedixetiju.pdf
    • https://cdn.shopify.com/s/files/1/0429/7526/4919/files/59687726942.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/nalafajipesesozu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0374/8260/files/81556026613.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/69148565843.pdf
    • https://cdn.shopify.com/s/files/1/0432/1512/6685/files/consulting_agreement_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/whirlpool_serial_number_lookup.pdf
    • https://cdn.shopify.com/s/files/1/0438/2919/8998/files/vapakugabotojupipesalugor.pdf
    • https://discord.gg/7YZ42gk
    • 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_off000055f3.bin
0965eb9bf7dcf1e3bf8ba2a4692ed8623e68a2b23535f4cebde547f272227563		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55F3 5028 bytes
font_01_sfnt_off00006733.bin
461bbfee48d61b91d37c104c51a77352613c8fad25bd2b4f76ccbc2e32cd2de0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6733 9836 bytes
font_02_sfnt_off000088ef.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88EF 4324 bytes

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