Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8bf0387ad42baa7…

MALICIOUS

PDF

52.0 KB Created: 2020-08-09 11:37:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 34b9d169a08d26a2cb74b0102b894495 SHA-1: f95341ac8b6ed40ece0acb8be4598b3dc7d06851 SHA-256: b8bf0387ad42baa7a5337d2dd4ae689ba0606e3c2cba1f07bafd87961527accd
128 Risk Score

Malware Insights

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

The PDF contains a link to a redirector hosted on 'ttraff.com', which is flagged as malicious. The document body and embedded links suggest a lure to a fake file converter, likely to trick users into visiting malicious sites. The PDF also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farms used to improve search engine rankings for malicious content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=file+converter+pdf+to+word+zamzar
    • http://files.wtcflashback.org/uploads/1/3/1/4/131437515/3923001.pdf
    • http://togadox.100blackmenofsanantonio.org/uploads/1/3/0/8/130814328/linivugixakikinu.pdf
    • http://lerebebin.jesswcoleman.com/uploads/1/3/1/4/131406717/kokuwog_lominevigapov_fafesi.pdf
    • http://rakitigip.skincarebydonna.com/uploads/1/3/0/9/130969754/5d31e96f1728e4.pdf
    • http://files.mamathewsproductions.com/uploads/1/3/1/6/131636807/e5dd078233bd05c.pdf
    • https://cdn.shopify.com/s/files/1/0429/5606/2876/files/jokofaruwefun.pdf
    • https://cdn.shopify.com/s/files/1/0428/2669/4822/files/vakagodumo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4357/7256/files/38626931872.pdf
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/32820782501.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/vogiwiwizejox.pdf
    • https://cdn.shopify.com/s/files/1/0430/3775/3501/files/68585508085.pdf
    • https://cdn.shopify.com/s/files/1/0429/6415/6582/files/sufugutenatezemoxowemajuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/dirulesama.pdf
    • https://cdn.shopify.com/s/files/1/0431/0656/6306/files/comparative_form_of_adjectives_and_adverbs_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0429/2778/4099/files/the_bible_old_testament.pdf
    • https://cdn.shopify.com/s/files/1/0434/3565/5335/files/31800143077.pdf
    • https://cdn.shopify.com/s/files/1/0430/9132/9173/files/gitogatelubikafolo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/kelojikivivaxunizavererig.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_off00007e98.bin
77deb8d7dfdf6d38f0ea95b7147b43307fbe5b8c187588c2b2d98968141354f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E98 5068 bytes
font_01_sfnt_off00008fcf.bin
6ad405918069c1fc41fdac742eb93158313d0eba345c9a84c605438790af7e39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FCF 10640 bytes
font_02_sfnt_off0000b442.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB442 4324 bytes

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