Malicious PDF — malware analysis report

Static analysis result for SHA-256 1af6c3961d6cbdda…

MALICIOUS

PDF

60.0 KB Created: 2020-08-17 01:29:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 17ce802e952c29e9772906ce08d8f336 SHA-1: 43d3e71ed045d1e97e8ab800f0be04a627b98219 SHA-256: 1af6c3961d6cbdda6d978027e98351e3d8739905d6ee343533cb277fa8b5eca0
152 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.cc). This suggests a link farm or redirection tactic to obscure the final malicious destination. The ML classifier also strongly indicated maliciousness. The document body contains text related to 'Angielski w tBumaczeniach. sytuacje pdf', which appears to be a lure for the malicious redirector.

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=angielski+w+t%25C5%2582umaczeniach.+sytuacje+pdf
    • http://suwolato.matthewdrnovseklaw.com/uploads/1/3/0/8/130874493/senuj.pdf
    • http://xufekuru.semperparatuspelli.com/uploads/1/3/2/6/132681670/4bf4be6b3e4f0.pdf
    • https://cdn.shopify.com/s/files/1/0438/5678/9664/files/cell_organelles_and_their_functions_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0436/6955/3305/files/jifeminagarupexosamibo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5653/7495/files/the_man_from_snowy_river_cast.pdf
    • https://cdn.shopify.com/s/files/1/0429/6815/4278/files/roosa_master_injection_pump.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/doditalagemebuf.pdf
    • https://cdn.shopify.com/s/files/1/0429/8440/7199/files/90142512213.pdf
    • https://cdn.shopify.com/s/files/1/0432/4101/3415/files/59058887607.pdf
    • https://cdn.shopify.com/s/files/1/0427/9179/6902/files/kixoxedaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/1817/4120/files/acca_f3_study_notes.pdf
    • https://cdn.shopify.com/s/files/1/0441/0654/7352/files/liwevoboraxupajaraneravak.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9048/files/gugoteberajemisekuj.pdf
    • https://cdn.shopify.com/s/files/1/0438/4066/7810/files/descendants_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/5827/3185/files/93334024121.pdf
    • https://cdn.shopify.com/s/files/1/0431/9523/6509/files/32794613023.pdf
    • https://cdn.shopify.com/s/files/1/0431/3382/9277/files/guxabuduzaz.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a72e.bin
e427299c0005e28c0a0cde58482684ab26b5af98ac52cfc777ce3eea226b0935		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA72E 5932 bytes
font_01_sfnt_off0000bb69.bin
265a5f16b6f4c7910f78319118ff1376f22cb982da820023eb66b543597d1bdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB69 11780 bytes

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