Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e06040d79752c71…

MALICIOUS

PDF

38.1 KB Created: 2020-09-01 00:03:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5eb51dbd690f3dcdba0a6f212e2f1f6c SHA-1: c862c67cf8d765d25f645f43de23250b3205cce8 SHA-256: 6e06040d79752c71086fb22d2f52cd5957d49daf2fe2823e09643d98e1ce10de
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. It also exhibits a PDF link farm pattern, with many links pointing to Shopify-hosted PDFs. The document body, though heavily obfuscated, contains the same malicious URL. The presence of a callback lure heuristic suggests a phishing or scam attempt, likely to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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=kaspersky+hybrid+cloud+security+datasheet
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/4311/0555/files/zitoxatu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5050/8181/files/suzidubef.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/47020304333.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/28281660371.pdf
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/letterhead_format_in_word.pdf
    • https://cdn.shopify.com/s/files/1/0435/2894/5819/files/26369960596.pdf
    • https://cdn.shopify.com/s/files/1/0435/4162/7029/files/buried_town_apk_mod.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vujunuvitiwowus.pdf
    • https://cdn.shopify.com/s/files/1/0436/1977/8723/files/92516860128.pdf
    • https://cdn.shopify.com/s/files/1/0436/2482/4995/files/rasezizokesosugorerana.pdf
    • https://cdn.shopify.com/s/files/1/0436/7620/5209/files/2711951532.pdf
    • https://cdn.shopify.com/s/files/1/0437/6897/1418/files/59416427622.pdf
    • https://cdn.shopify.com/s/files/1/0436/9888/0680/files/73386162674.pdf
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/danevipijap.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000056ce.bin
8174982fa30fc33f6b74f9507f416cc9e473fa2e80d9cf21a561e95701c59080		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56CE 5436 bytes
font_01_sfnt_off00006944.bin
39eb7323b05cdf6093e0a4d8ac2870bc8e3e4d0757b67bb4d4ab07837316eb6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6944 9948 bytes

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