Malicious PDF — malware analysis report

Static analysis result for SHA-256 b466467b67f715bb…

MALICIOUS

PDF

45.3 KB Created: 2020-08-17 17:19:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e4023f6072475e3a6cc2903cfd3a3eb SHA-1: 3f87dbf0eaddd2ca074d223b1b4bccb535598e07 SHA-256: b466467b67f715bbecdf3d1733e44172b12cef5739459c3a02a2cb18bfaeae49
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to what appears to be a link farm designed to obscure malicious destinations. One critical heuristic identified a link to known malicious redirector infrastructure at `https://ttraff.ru/pify`. The document body, though heavily obfuscated, also contains this URL and numerous other URLs pointing to Shopify-hosted PDF files, suggesting a tactic to manipulate search engine results or overwhelm the user with choices. No scripts were extracted from this sample.

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=%25C3%25A7al%25C4%25B1ku%25C5%259Fu+pdf+kitap+indir
    • http://files.truthloveparent.com/uploads/1/3/2/7/132740511/gipunuba-basagipifo-zafarozudemenix-xaravafe.pdf
    • http://xorotaw.thedreamblog.com/uploads/1/3/2/6/132682051/ritiburozesu.pdf
    • http://wapekabas.ninalyssephotography.com/uploads/1/3/1/4/131453870/venisop_xazunubovamow_delox.pdf
    • http://liwadibo.argylefamilyphotography.com/uploads/1/3/2/8/132814930/folemagifejo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1979/6633/files/klasifikasi_angiospermae.pdf
    • https://cdn.shopify.com/s/files/1/0429/1733/1100/files/duganoxedim.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/used_car_checklist_reddit.pdf
    • https://cdn.shopify.com/s/files/1/0435/1623/1840/files/english_articles_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/3426/4220/files/21962121052.pdf
    • https://cdn.shopify.com/s/files/1/0434/3437/7377/files/vocabulary_words_with_meaning_in_urdu_and_english_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/7401/9740/files/42134488736.pdf
    • https://cdn.shopify.com/s/files/1/0430/9165/6864/files/bemifomolunuvuzugilapes.pdf
    • https://cdn.shopify.com/s/files/1/0437/0916/9815/files/materiales_no_metlicos.pdf
    • https://cdn.shopify.com/s/files/1/0437/0595/8553/files/69057169045.pdf
    • https://cdn.shopify.com/s/files/1/0428/6952/2599/files/purdue_housing_contract.pdf
    • https://cdn.shopify.com/s/files/1/0434/7192/9496/files/41438039464.pdf
    • https://cdn.shopify.com/s/files/1/0434/0737/6546/files/13150597895.pdf
    • https://cdn.shopify.com/s/files/1/0434/5934/6582/files/pefadosew.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_off00006330.bin
174007736647536902871de0e0062dd1c478c66b982f30916e6dcf78a1b08cd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6330 4948 bytes
font_01_sfnt_off000073cf.bin
0450da866072ecbba032d4f8380aeeda7be9dc40de8a1cc6f9589bfe3cd53332		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73CF 11544 bytes
font_02_sfnt_off00009821.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9821 4324 bytes

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