Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ce0bd1e7ea7134f…

MALICIOUS

PDF

49.2 KB Created: 2020-08-21 21:33:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2c45692af3646d8b48552e505bd43db SHA-1: f3a29be22cb02d2e530c46ec9abb42e7b6bb4f28 SHA-256: 9ce0bd1e7ea7134f801923a7cef7acc61bcd79af7dea97e0f29331710e6305c9
152 Risk Score

Malware Insights

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

The PDF contains a link farm and a prominent malicious redirector URL, indicating a phishing or scam attempt. The primary malicious URL is https://ttraff.com/pify?keyword=access+canberra+lease+forms, which is designed to redirect users to further malicious content. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, limiting the analysis of specific execution behaviors.

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=access+canberra+lease+forms
    • http://files.therealfoodcafe.com/uploads/1/3/1/6/131637402/d087738.pdf
    • http://manexe.sarahpowellyoga.co.uk/uploads/1/3/1/0/131070874/3112189.pdf
    • http://dirurorob.artartmargaretcameron.com/uploads/1/3/0/8/130874565/waxaro.pdf
    • http://files.ugoddessyoga.com/uploads/1/3/0/7/130739500/7057ac453.pdf
    • http://files.courtneykanigphotography.com/uploads/1/3/1/0/131070604/5602777.pdf
    • https://cdn.shopify.com/s/files/1/0428/9747/3699/files/laws_of_reflection_and_refraction_of_light.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2220/files/runaserimud.pdf
    • https://cdn.shopify.com/s/files/1/0436/0772/0094/files/pobafafexum.pdf
    • https://cdn.shopify.com/s/files/1/0433/9430/2115/files/voxonakagakomisuloloponu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6902/2109/files/hng_dn_ct_file_bng_foxit.pdf
    • https://cdn.shopify.com/s/files/1/0438/4240/4512/files/interaction_diagram_excel_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0454/4813/4814/files/nomenclature_of_hydrated_ionic_compounds_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/8978/0124/files/40931073608.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_off0000805a.bin
d9d50cc031fa97dec934d35c6709945619248956e7d4fd3f692fa180d13c3930
pdf-font-stream PDF embedded font (sfnt) at offset 0x805A 5156 bytes
font_01_sfnt_off000091c0.bin
af1dd926123f5ed5285fe40fe3f438a8fabff6d38958f458522de7d5a30cabfe
pdf-font-stream PDF embedded font (sfnt) at offset 0x91C0 11896 bytes