Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0d4e093a7ff808c…

MALICIOUS

PDF

45.7 KB Created: 2020-08-12 15:48:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e1f8fd98ce59be9d4af524780f97cf40 SHA-1: 34d8df684108f17173ab5f0f91fbbbe18bd54f7a SHA-256: f0d4e093a7ff808c7e20460193025dbda681ef7da171abb0220fc12de75ebf5b
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to converting scanned PDFs to Word, suggesting a lure to trick users into clicking the malicious link. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=convert+scanned+pdf+to+word+free+download+full+version
    • http://files.catarellaphoto.com/uploads/1/3/2/6/132681823/gokamuzisega-fegegix-tolelokazovojiz.pdf
    • http://files.appleseedsquares.com/uploads/1/3/2/6/132681452/titoke-paduzi.pdf
    • http://talinisop.bobcoxphotography.com/uploads/1/3/1/6/131606289/3199874.pdf
    • http://jonolu.kjetiljerve.com/uploads/1/3/0/7/130775795/godegidajanet.pdf
    • http://files.maxiandolikessler.com/uploads/1/3/1/3/131384721/zazoxa.pdf
    • https://cdn.shopify.com/s/files/1/0438/6252/4069/files/kafabafezufix.pdf
    • https://cdn.shopify.com/s/files/1/0431/9998/7873/files/brave_new_world_bersetzung_deutsch.pdf
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/womidesavilutodesivaj.pdf
    • https://cdn.shopify.com/s/files/1/0452/9078/2881/files/surrealismo_en_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0432/6440/9755/files/mupegosiviliribozili.pdf
    • https://cdn.shopify.com/s/files/1/0435/7275/6648/files/africana_womanism_reclaiming_ourselves.pdf
    • https://cdn.shopify.com/s/files/1/0431/5657/0266/files/vegetarian_bodybuilding_diet.pdf
    • https://cdn.shopify.com/s/files/1/0429/7303/6697/files/38924452280.pdf
    • https://cdn.shopify.com/s/files/1/0452/9078/2881/files/career_paths_tourism_book.pdf
    • https://cdn.shopify.com/s/files/1/0439/0807/1576/files/3188051917.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/limujipowugotipe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6113/2962/files/caboolture_train_line_timetable.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/7161382312.pdf
    • https://cdn.shopify.com/s/files/1/0435/4569/0266/files/26095693078.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/
    • https://cdn.shopify.com/s/files/1/0432/697

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a13.bin
05612aa86a48bce7bb6cb67e79cc226b43c86c309d9ecea2bd5d5bf4bdae60d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A13 5204 bytes
font_01_sfnt_off00007bed.bin
850986a214fdb79e706e016fafd814cd1c2e3c588e6e21646f65cec1462d3cc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BED 11172 bytes
font_02_sfnt_off0000a18d.bin
5f7498f8e433e4c6c47e8ca53e78f46c92ad2660f1d70c8a76bf58ffa4fc47b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA18D 1740 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.