Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1db5db172d78896…

MALICIOUS

PDF

47.4 KB Created: 2020-08-12 06:20:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94604f6718203cf261cdfe8fcb4899e3 SHA-1: ebfae6258e4edb460e993cdd42063dbafec81b82 SHA-256: f1db5db172d7889619f82d7d93a4bb0171a417e93eb28f5a9ac5aec42d4e8f1c
120 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, many of which are hosted on Shopify. One of these links, disguised as 'Nejm author guidelines pdf', redirects to a malicious URL on 'ttraff.com'. This indicates a phishing or scam attempt designed to lure users to malicious infrastructure. No scripts were extracted, limiting the analysis of further malicious behavior.

Heuristics 3

  • 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.
  • 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=nejm+author+guidelines+pdf
    • http://files.denverdeckandfence.com/uploads/1/3/0/8/130814205/ddf4ae.pdf
    • http://files.rootsjuiceco.com/uploads/1/3/1/3/131384300/2a71b78bf3.pdf
    • http://files.abodobusinesssolutions.com/uploads/1/3/0/9/130969681/gezopobobujija.pdf
    • http://gagade.visitgoringandstreatley.co.uk/uploads/1/3/1/0/131070786/tiwowogijipeti.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/lijeleped.pdf
    • https://cdn.shopify.com/s/files/1/0447/9765/7248/files/perfect_10_magazine.pdf
    • https://cdn.shopify.com/s/files/1/0437/6893/8647/files/44777480114.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3100392900.pdf
    • https://cdn.shopify.com/s/files/1/0431/0820/4708/files/loludiwexolasu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5940/4197/files/construction_scope_of_work.pdf
    • https://cdn.shopify.com/s/files/1/0431/2429/3794/files/i_ve_got_big_balls_song.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/ralebijimolosawedoka.pdf
    • https://cdn.shopify.com/s/files/1/0432/7899/1518/files/ron_and_ian.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53293114795.pdf
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/63870206705.pdf
    • https://cdn.shopify.com/s/files/1/0434/5479/1832/files/catalogue_muji.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_off00006dbe.bin
83f01a299e1f368625cf96f15729ce2c27d496772160caca618d58a9a2624649		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DBE 5384 bytes
font_01_sfnt_off00007ff4.bin
ded9f80fe54822ace5e8f99f4a7b1df861f6c3fda416654cda6fe3650672dbec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF4 10144 bytes
font_02_sfnt_off0000a2a3.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2A3 4324 bytes

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