Malicious PDF — malware analysis report

Static analysis result for SHA-256 6031032fdeeac781…

MALICIOUS

PDF

49.9 KB Created: 2020-08-09 03:57:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1af35ff06612d11a69e941d24050f57f SHA-1: 0f447cc537d4dac24c330f6d842cea3effe737e8 SHA-256: 6031032fdeeac781be74d5c3fb2c332dc0c57e6dcd0e1c8df26711c72f4b8fed
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is used to disguise the true destination. The document body also contains the same URL, suggesting it's the primary lure. The presence of numerous other PDF links, many pointing to Shopify, indicates a link farm strategy to improve search engine ranking for the malicious lure. The ML classifier also strongly flagged this PDF as malicious.

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.com/pify?keyword=ielts+reading+answer+sheet+pdf+free+download
    • http://wimix.groundsforlove.org/uploads/1/3/1/3/131381428/rifojexujor-lupupolad-jadivuda-detobuge.pdf
    • http://files.andersoncountygop.org/uploads/1/3/1/3/131384721/nosopux.pdf
    • http://files.rootsjuiceco.com/uploads/1/3/0/7/130740391/teleralemazasi_punijijanume.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/8964/9050/files/10th_maths_guide_2020_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/gesizevop.pdf
    • https://cdn.shopify.com/s/files/1/0429/5029/5708/files/focus_t25_meal_plan.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/bajadataduneras.pdf
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/15013131981.pdf
    • https://cdn.shopify.com/s/files/1/0431/8271/9136/files/darusigozixu.pdf
    • https://cdn.shopify.com/s/files/1/0436/5674/1022/files/duzir.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ridojunewosinojep.pdf
    • https://cdn.shopify.com/s/files/1/0432/2361/3595/files/kamotolejofemojopa.pdf
    • https://cdn.shopify.com/s/files/1/0439/2157/2008/files/asian_food_menu.pdf
    • https://cdn.shopify.com/s/files/1/0427/5752/1574/files/dugajoruguzijebaferom.pdf
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/dofot.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070dc.bin
32693561d4a4bac5842a8708cecde418968ee22d32bf6e66894fc9458c787868		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70DC 5120 bytes
font_01_sfnt_off00008246.bin
5ab87d9aecffe2b26dde1a5490b68ede8d3aa51d457ef10b453d658beeaef09a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8246 16464 bytes
font_02_sfnt_off0000ac3b.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC3B 4324 bytes

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