Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cec414048f11a69…

MALICIOUS

PDF

42.2 KB Created: 2020-08-30 18:54:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92d6b81ac2ec299784e93b9f56c23223 SHA-1: e082fc4ce62daefde03d9e896fb633f2bb766c80 SHA-256: 0cec414048f11a69646e9eca613b9976ffaa5ca6265ad91432c5e009b8d7422f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the URL ttraff.com. The document's content, though obfuscated, appears to be a lure related to mushroom cultivation, aiming to trick users into clicking the malicious link. The presence of numerous external PDF links, many pointing to Shopify, suggests a tactic to artificially inflate search engine rankings or distribute 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=the+mushroom+cultivator%253A+a+practical+guide+to+growing+mushrooms+at+home
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/5111/4908/files/8936055456.pdf
    • https://cdn.shopify.com/s/files/1/0427/4677/3660/files/metaphysical_poets_by_ts_eliot.pdf
    • https://cdn.shopify.com/s/files/1/0430/9906/2421/files/glencoe_pre_algebra_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/8889/6415/files/largest_city_in_usa.pdf
    • https://static.usrfiles.com/ugd/bd5c68_309458c0fc534f3a9a39f0584f2e6be2.pdf
    • https://static.usrfiles.com/ugd/b8c837_9431dcffb636424b802f7aac8940d8e2.pdf
    • https://static.usrfiles.com/ugd/2b3f46_4112c4175f83428d916f34b6ea7ae3e9.pdf
    • https://static.usrfiles.com/ugd/2ac701_28ab89d5e63c45dbb54d472762d0581f.pdf
    • https://static.usrfiles.com/ugd/b8c837_bfbe03bef4f94b789c901e4f3cd1ffa9.pdf
    • https://static.usrfiles.com/ugd/b8c837_64e5bb49698a4c9bad2780874bc10da0.pdf
    • https://static.usrfiles.com/ugd/5b5da7_7ba1f135bf374c67ac4f8aad62cf1be2.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005159.bin
da080254ac2af2e24b655c6c3f4f9594a955d40ad87c54f57cac5ce12ac9d807
pdf-font-stream PDF embedded font (sfnt) at offset 0x5159 5636 bytes
font_01_sfnt_off0000646e.bin
72d934aba2423dfe032db88559dc1f1d50dae7500947849fa35817d782d1a28c
pdf-font-stream PDF embedded font (sfnt) at offset 0x646E 9896 bytes
font_02_sfnt_off00008698.bin
349de0a3d13a9623e9eb1c09c937f0fb5c1267526918805021cbc0bb912f81ed
pdf-font-stream PDF embedded font (sfnt) at offset 0x8698 16124 bytes