Malicious PDF — malware analysis report

Static analysis result for SHA-256 30e5155224bddeb9…

MALICIOUS

PDF

44.7 KB Created: 2020-08-17 15:33:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e3eec2c6d3516a2fa95724a263d676ad SHA-1: d4f30a24e683eb6b0a991e51b2c1f6a4783372a0 SHA-256: 30e5155224bddeb9d23da61da39deb685033d30c40cdd705ce784ec3bdf813de
154 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=software+adobe+illustrator+cs6+portable'. This suggests the document's primary purpose is to lure users into clicking malicious links, likely for phishing or to download further malware. No scripts were extracted, but the extensive link structure is sufficient evidence.

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=software+adobe+illustrator+cs6+portable
    • http://files.music.shenfieldlearning.com/uploads/1/3/1/4/131482930/8556260.pdf
    • http://dofuxo.briannaholt.com/uploads/1/3/1/3/131381428/fetanim.pdf
    • http://files.ballenislessgc.com/uploads/1/3/1/8/131858287/mumujikituxaxex-buletabilosugo-magujeze-zitizakenisok.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/balukufimajo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8866/6017/files/pathophysiology_of_fever.pdf
    • https://cdn.shopify.com/s/files/1/0433/0808/9509/files/liripuka.pdf
    • https://cdn.shopify.com/s/files/1/0430/8323/5489/files/3676752988.pdf
    • https://cdn.shopify.com/s/files/1/0437/6517/0334/files/asalem_jarigindante_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/0278/1083/files/lorikofasofilus.pdf
    • https://cdn.shopify.com/s/files/1/0435/2265/4362/files/rujidefawidobixemasejul.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8216/files/kogesazona.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/madadajufiwezufawowid.pdf
    • https://cdn.shopify.com/s/files/1/0427/4041/6678/files/94160947888.pdf
    • https://cdn.shopify.com/s/files/1/0431/9664/5538/files/cub_cadet_ltx_1050_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/5556/2398/files/delowa.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_off00006ea6.bin
1a55fb3cd78c9d41ac32468a1f825853f91f96d8936f4355b4c19b45009274e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA6 5636 bytes
font_01_sfnt_off000081ea.bin
38f82dc02b1ab84e784674a006623e70d600b4d07b6522d903df38abfc287385
pdf-font-stream PDF embedded font (sfnt) at offset 0x81EA 10604 bytes