Malicious PDF — malware analysis report

Static analysis result for SHA-256 30881167266c8de6…

MALICIOUS

PDF

56.2 KB Created: 2020-08-03 22:12:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce82f2ad0f3cc250193d9915247fcb55 SHA-1: c1e80aeb64b60cf176d8d49a8d70f6791357dd30 SHA-256: 30881167266c8de6287f36473aa664a31f110659806bd81ce268caa0f99b4673
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to known malicious redirector infrastructure at 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL, suggesting the primary purpose is to redirect users to malicious sites.

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.ru/pify?keyword=my+ambition+in+life+essay+in+english+pdf
    • http://files.guideconcept.ch/uploads/1/3/1/3/131380504/velowoxitelexiseg.pdf
    • http://files.yorktownlionsclub.com/uploads/1/3/1/6/131606268/3046ff4527e.pdf
    • http://files.familywaybirth.com/uploads/1/3/0/7/130776592/tewenugemaduk-keziro.pdf
    • http://files.westbloomfielddeca.com/uploads/1/3/0/7/130739301/5471524.pdf
    • http://files.converseconserve.com/uploads/1/3/1/4/131406068/4114025.pdf
    • https://cdn.shopify.com/s/files/1/0433/2702/9400/files/90190989238.pdf
    • https://cdn.shopify.com/s/files/1/0429/1097/4108/files/korased.pdf
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/betejezuzudafis.pdf
    • https://cdn.shopify.com/s/files/1/0448/0575/0946/files/rdr2_lonnie_s_shack.pdf
    • https://cdn.shopify.com/s/files/1/0436/3039/5552/files/xonaje.pdf
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/74007415055.pdf
    • https://cdn.shopify.com/s/files/1/0431/3664/7317/files/matifud.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8549/files/7059295483.pdf
    • https://cdn.shopify.com/s/files/1/0436/4976/1433/files/gta_san_andreas_rom.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/subutosewigowekomu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6011/7160/files/minutarotezopififedove.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_off00009ea6.bin
64c0087f5e98487e92dc6bee11d5805ee2533e5cc0267fc19a0afb90d9a385e2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9EA6 5604 bytes
font_01_sfnt_off0000b1a2.bin
b892e16628d7a792d41d7d0e9615e5d024291760b16a3b0e282109f4b7ab8e73
pdf-font-stream PDF embedded font (sfnt) at offset 0xB1A2 9964 bytes