Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c464cfcd683ab31…

MALICIOUS

PDF

45.4 KB Created: 2020-08-11 14:57:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bc5b94a7efae249736d919522da346b SHA-1: 38ea47314cec9c1b7d2ad87183141f89dd6ed742 SHA-256: 4c464cfcd683ab3139122f2a85841277b8e38335fda47d6c4f8626dbf75b6108
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body and embedded links suggest a lure related to 'borderline personality disorder pdf download', which redirects to a malicious URL. The presence of a large number of external PDF links, many hosted on Shopify, further supports the SEO link farm tactic.

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=borderline+personality+disorder+pdf+download
    • http://suxasagi.ranejiang.com/uploads/1/3/0/7/130738993/28f47eb1a.pdf
    • http://files.uusl.net/uploads/1/3/1/4/131408170/1284853.pdf
    • http://files.juaj.nl/uploads/1/3/0/7/130776110/9401662.pdf
    • https://cdn.shopify.com/s/files/1/0432/2626/7806/files/tewogabiwatifoxer.pdf
    • https://cdn.shopify.com/s/files/1/0437/9816/7713/files/torrenting_rosetta_stone.pdf
    • https://cdn.shopify.com/s/files/1/0435/5362/0136/files/dupabatekenabozitosujij.pdf
    • https://cdn.shopify.com/s/files/1/0431/5817/5906/files/78580048477.pdf
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/59209070368.pdf
    • https://cdn.shopify.com/s/files/1/0433/4285/6344/files/68119695579.pdf
    • https://cdn.shopify.com/s/files/1/0431/4277/4938/files/16926941851.pdf
    • https://cdn.shopify.com/s/files/1/0435/3867/7924/files/dadopax.pdf
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/leer_caballo_de_troya_2.pdf
    • https://cdn.shopify.com/s/files/1/0434/3198/5309/files/36955774952.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/pamafadavolanazunafe.pdf
    • https://cdn.shopify.com/s/files/1/0429/8362/0767/files/96430024401.pdf
    • https://cdn.shopify.com/s/files/1/0432/0195/3952/files/95178712461.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_off00006690.bin
1ebd470d3472c052cdaab204603335396badbe88097d464c436386568977cc2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6690 5064 bytes
font_01_sfnt_off000077e4.bin
6bc7e362d00d69dfd282f62118ca310d8ab6aa4e52362f60bf3926d25fd59e9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77E4 10104 bytes
font_02_sfnt_off00009a58.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A58 4324 bytes

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