Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f062e45151b3479…

MALICIOUS

PDF

42.0 KB Created: 2020-09-01 09:29:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 24f30abb4427c36613fe5277c563eb3f SHA-1: 6c4d055c9fda6cc22317ebcbd28d5160c69897bc SHA-256: 1f062e45151b347933db56c7d7ae03c9d65e0bf1f02f4ed25bdc199466f28ed9
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to ttraff.com, which is associated with malicious activity. The document body, though heavily obfuscated, contains text related to 'create gmail account registration form' and includes the malicious URL, suggesting a phishing or scam lure. The presence of a large number of external PDF links, many pointing to static.usrfiles.com, indicates a link farm designed to manipulate search engine results or distribute further 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=create+gmail+account+registration+form
    • https://static.usrfiles.com/ugd/ae059d_07cdd96854fb453284f2035e04cc9f7b.pdf
    • https://static.usrfiles.com/ugd/1be480_714d84130829484895de97fe9912258a.pdf
    • https://static.usrfiles.com/ugd/739437_433ccbd0117a4fe5bf7b96b41a929bef.pdf
    • https://static.usrfiles.com/ugd/73c254_31fb223bb9494800a54f5ed0c3254497.pdf
    • https://static.usrfiles.com/ugd/b8c837_013be2fdc21c4e9b97afb638a87075e5.pdf
    • https://static.usrfiles.com/ugd/3b7182_7fdba0ad8b6342e0ab37cd5297874496.pdf
    • https://static.usrfiles.com/ugd/5de1df_e0079bf5f0454ca687cf9b6ff16b1a99.pdf
    • https://cdn.shopify.com/s/files/1/0434/7166/7360/files/latest_version_of_chrome_for_windows.pdf
    • https://cdn.shopify.com/s/files/1/0428/0696/8483/files/9371389248.pdf
    • https://cdn.shopify.com/s/files/1/0429/0599/3375/files/56353593005.pdf
    • https://cdn.shopify.com/s/files/1/0430/9650/6521/files/civil_construction_company_profile.pdf
    • https://cdn.shopify.com/s/files/1/0436/9930/6650/files/46429951099.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96626323422.pdf
    • https://cdn.shopify.com/s/files/1/0434/7750/0057/files/47924863671.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_off0000696b.bin
23cfe0ea28e1c76406fd91bd32def3ad0a1d328f34988d98091cf7fb06e131fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x696B 5104 bytes
font_01_sfnt_off00007ab1.bin
0e56269d43abad41c66807ab9351ff2816f44c81a4e1ca86d66d0248a9bd8bd7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB1 9704 bytes