Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee96edba80610b1a…

MALICIOUS

PDF

49.4 KB Created: 2020-07-27 17:37:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 282050c31052fa993a17c09488a21243 SHA-1: 3c02ed963b810c1f12d17de58eb66c1ab64481db SHA-256: ee96edba80610b1a24dcf8868d09e30afd122355472aff5a870e2eb6b392e677
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, with multiple links hosted on Shopify, suggesting an attempt to broaden reach or obscure the ultimate destination. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of a malicious redirector and link farm strongly suggests a phishing or malware distribution campaign.

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=bio+data+english+format+pdf
    • http://files.caninecharacter.com/uploads/1/3/1/4/131453436/4586383.pdf
    • http://files.3sandskennels.com/uploads/1/3/2/6/132695492/1691652.pdf
    • http://files.ciescreations.org/uploads/1/3/1/3/131378950/webaxobuw.pdf
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/51592929524.pdf
    • https://cdn.shopify.com/s/files/1/0434/0583/6438/files/40367217858.pdf
    • https://cdn.shopify.com/s/files/1/0427/9471/3244/files/gebumorigasekedod.pdf
    • https://cdn.shopify.com/s/files/1/0431/3183/0421/files/72058160941.pdf
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/37044479845.pdf
    • https://cdn.shopify.com/s/files/1/0433/3250/1656/files/magiwupapupimikokorane.pdf
    • https://cdn.shopify.com/s/files/1/0433/3666/3208/files/tilutodakazememodibopu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5374/4279/files/pijanomagi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1081/files/gofimatide.pdf
    • https://cdn.shopify.com/s/files/1/0432/4940/2024/files/72842779519.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/
    • https://cdn.shopify.com/s/fi

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000074d0.bin
048fb1891f432488516cd811e7b04d68e7d39e548ca3495625137f8fb0c23ff4
pdf-font-stream PDF embedded font (sfnt) at offset 0x74D0 6744 bytes
font_01_sfnt_off000085b5.bin
93beba02450dc3c6aad78bc6ec9463a349112bf2913b80540fa0c633152a237f
pdf-font-stream PDF embedded font (sfnt) at offset 0x85B5 5292 bytes
font_02_sfnt_off00009786.bin
68fb7d8f1ef0eb6c6bdd4d253995305333fe942e27c1de9a6e4bce536f56c688
pdf-font-stream PDF embedded font (sfnt) at offset 0x9786 9556 bytes