Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e67d601b4281049…

MALICIOUS

PDF

37.2 KB Created: 2020-08-14 19:11:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8307f4160259794d54044b50d6e7763c SHA-1: cab36b01de3b7dd0b182960cb70a5e1b584ced68 SHA-256: 4e67d601b4281049506ef6611023d987616c88c446ff0dea7bbecdfd2f806cdb
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a computer textbook and the malicious URL, suggesting a lure to download further malicious content. The presence of a link farm heuristic further supports the malicious intent of distributing links.

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.cc/pify?keyword=understanding+computers+today+and+tomorrow+15th+pdf
    • http://files.yfeproductions.org/uploads/1/3/0/8/130815277/powelediw_xifikirewuvaro.pdf
    • http://files.maylingmartinez.com/uploads/1/3/0/8/130874554/7f50aa65e6b93d.pdf
    • http://files.martinomartinicenter.org/uploads/1/3/1/4/131406826/bazita.pdf
    • http://files.animuspharma.com/uploads/1/3/0/8/130874587/lisixajizizi.pdf
    • https://cdn.shopify.com/s/files/1/0428/3390/3783/files/90293268544.pdf
    • https://cdn.shopify.com/s/files/1/0428/0729/6163/files/jogufufow.pdf
    • https://cdn.shopify.com/s/files/1/0431/6895/6565/files/8263109845.pdf
    • https://cdn.shopify.com/s/files/1/0431/0279/7986/files/bavevipurimojug.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48465164240.pdf
    • https://cdn.shopify.com/s/files/1/0435/0948/1626/files/silabus_biologi_sma_kelas_xi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0591/0933/files/12202452139.pdf
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/galaxy_buds_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/9815/2866/files/29092598392.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/koxumugude.pdf
    • https://cdn.shopify.com/s/files/1/0432/2571/0756/files/all_rules_of_articles_in_english_grammar.pdf
    • https://cdn.shopify.com/s/files/1/0432/8026/9462/files/59663248824.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_off000051bd.bin
dc09b83180a467f0b212283d952ef3426eb6b72079cd324e0e562d74ce107348		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51BD 5900 bytes
font_01_sfnt_off000065c5.bin
1920f7c99c44c78045fb457c3ad12687e3d5e67fa0ff099cc501ebd8ebdc0128		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65C5 9804 bytes

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