Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee69438bd8833be5…

MALICIOUS

PDF

35.4 KB Created: 2020-08-31 13:37:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2feae965765369a5ae5e0d6b38d39374 SHA-1: 9d0fe2fbc2f8de5d436bbf5bd5100964d9e7f66d SHA-256: ee69438bd8833be58095d912e916c71a187585c28c4d470980c686155d723580
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a 'Forcepoint casb deployment guide'. This indicates a phishing or social engineering attempt to redirect the user to malicious infrastructure. The PDF also contains a large number of external links, many hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning tactic to improve search engine visibility for the malicious content.

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/wix?keyword=forcepoint+casb+deployment+guide
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vinufew.pdf
    • https://cdn.shopify.com/s/files/1/0447/4650/6391/files/ccna_cyber_ops_secops_210_250_official_cert_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/0948/1626/files/40667417626.pdf
    • https://static.usrfiles.com/ugd/89363e_389ef850ca47405ca0d066a5984e039c.pdf
    • https://static.usrfiles.com/ugd/b8c837_78f7a6f0881a4487a911c0985caa0178.pdf
    • https://static.usrfiles.com/ugd/9b33c5_a369f81bf61945cd9e85ecf1aaa13afe.pdf
    • https://static.usrfiles.com/ugd/b8c837_b8873021ca7949f9a9aab3c01abd3296.pdf
    • https://static.usrfiles.com/ugd/e2c250_7df35e3b602f4a0b8525eee113e00a86.pdf
    • https://cdn.shopify.com/s/files/1/0435/0964/5478/files/38920451506.pdf
    • https://cdn.shopify.com/s/files/1/0433/0510/7620/files/dungeons_and_dragons_cartoon_characters.pdf
    • https://cdn.shopify.com/s/files/1/0462/3604/1376/files/suxub.pdf
    • https://cdn.shopify.com/s/files/1/0440/1440/3742/files/sheet_metal_press_deep_drawing.pdf
    • https://cdn.shopify.com/s/files/1/0463/6052/7003/files/what_you_pawn_i_will_redeem.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_off00004d62.bin
93afbcb4e9c99e8733bd7c125c15ccabbd81f897a7390186bb7d4fc9adf105ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x4D62 5588 bytes
font_01_sfnt_off0000604f.bin
d2b564fe9353fb5926190728b70b0630657957f854fd145acd9cb3ea982d4684
pdf-font-stream PDF embedded font (sfnt) at offset 0x604F 9608 bytes