Malicious PDF — malware analysis report

Static analysis result for SHA-256 affe9a623ea04616…

MALICIOUS

PDF

41.4 KB Created: 2020-08-31 07:14:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a3ab0aad8eafea215a5dc413b10171d SHA-1: f5e4eb19d1cc32953fbe0124cc2648be177a062c SHA-256: affe9a623ea046168d9cf7df8b1af53aa349274cff9b6cd0f053534a3e8aeb3f
120 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. This URL is embedded within the document body, disguised as a search result for a specific PDF title. The document also contains a large number of external PDF links, many hosted on Shopify, which is flagged as a link farm. The primary malicious URL is the most critical IOC.

Heuristics 3

  • 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.
  • 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=baudrillard+system+of+objects+pdf
    • https://cdn.shopify.com/s/files/1/0434/7153/6285/files/puxemilezukufivi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2953/files/zugijudanijovarawe.pdf
    • https://cdn.shopify.com/s/files/1/0437/3417/1800/files/zoxajobiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/0638/5576/files/afire_love_piano.pdf
    • https://static.usrfiles.com/ugd/111c46_90bc307cc0d24f4cb2f87024dff5edc0.pdf
    • https://static.usrfiles.com/ugd/fedf23_7ae79958c1b44572acfcdd00247a92f9.pdf
    • https://cdn.shopify.com/s/files/1/0432/5045/0600/files/anime_droid_premium_apk.pdf
    • https://cdn.shopify.com/s/files/1/0435/0178/1156/files/fashion_nova_formal_gowns.pdf
    • https://cdn.shopify.com/s/files/1/0462/0088/1302/files/serway_physics_for_scientists_and_engineers_8th_edition_slader.pdf
    • https://cdn.shopify.com/s/files/1/0429/9263/1962/files/473433303.pdf
    • https://cdn.shopify.com/s/files/1/0433/9659/5868/files/stampy_lovely_world_seed.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45235944591.pdf
    • https://cdn.shopify.com/s/files/1/0431/1298/8821/files/happy_birthday_song_free_pagalworld.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51982080438.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_off00006351.bin
44439529d868e8abe06cb83febc68c9a5b38909add9023a48caaa0c8c88f94e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6351 5668 bytes
font_01_sfnt_off00007680.bin
44613879def7a7653648cc7031943e079f07feaeb10b338f300a7b6a20808a15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7680 10168 bytes

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