Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eb97d77e5b98d21…

MALICIOUS

PDF

44.2 KB Created: 2020-08-11 16:24:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c3283c5e119a74ddf0a1a8524571c28 SHA-1: d1ba2d3911ef04aebe9d7a937aab7873f6327bbd SHA-256: 5eb97d77e5b98d216b07fd5b2a3f6d211cc2b2fa21b2ae5ec1cf8d3fbdd2a4ac
154 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which point to potentially malicious redirectors or SEO link farms. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a "blast furnace book pdf". The presence of numerous links and a redirector URL suggests an attempt to drive traffic to malicious sites, likely for phishing or malware distribution.

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.cc/pify?keyword=blast+furnace+book+pdf
    • http://files.portellowinecafe.com/uploads/1/3/1/4/131408250/zitog-xotoj-tivatiguxivev.pdf
    • http://dovape.figjamcottage.com/uploads/1/3/0/7/130775607/malaniximur.pdf
    • http://files.bishopgumbleton.com/uploads/1/3/1/3/131379371/tokasinipegog.pdf
    • http://files.baliscubacourse.com/uploads/1/3/0/7/130775398/7ca56ff22639e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/0874/3835/files/murigomosokoxobajeledin.pdf
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/bigamabulevorumol.pdf
    • https://cdn.shopify.com/s/files/1/0433/9689/0785/files/howl_s_moving_castle_kissanime.pdf
    • https://cdn.shopify.com/s/files/1/0434/3929/2577/files/51797827835.pdf
    • https://cdn.shopify.com/s/files/1/0433/5907/6510/files/wapobejetivepumovez.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8854/files/html_to_angular_example.pdf
    • https://cdn.shopify.com/s/files/1/0438/9352/2587/files/34586393005.pdf
    • https://cdn.shopify.com/s/files/1/0432/4848/4507/files/dibavu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3849/8198/files/dojajuluzat.pdf
    • https://cdn.shopify.com/s/files/1/0428/9200/1433/files/xevebezakataziwaze.pdf
    • https://cdn.shopify.com/s/files/1/0431/5440/7580/files/koraresuwolalaxodikur.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/cadillac_xts_2020_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/3263/2730/files/98135834627.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuxovozukirofavekejob.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_off00006d0c.bin
ea08942bc4814fd2a5323c9993c839bb494a419cd3b38fc0f44057fdfaaa0093		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0C 5404 bytes
font_01_sfnt_off00007f69.bin
0edafe97c487ac70b96065c79408e47b347740aeaa30bd3edf43a21762beb0fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F69 10752 bytes

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