Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c6655132c58ea8b…

MALICIOUS

PDF

40.8 KB Created: 2020-08-19 16:53:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64c714c5109306c3f958532c22de83e6 SHA-1: 142b7c56736a4311e7926961c34d87faa35f5495 SHA-256: 0c6655132c58ea8ba1768fca86e0363734f1c223ff5d268cee1387953b9a6bee
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, embedding numerous links to other PDFs hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute further malicious content. The ML classifier also strongly flagged this PDF as malicious.

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/pify?keyword=mobogenie+apk+android+4.+2.+2
    • http://jalom.magictvsoftware.com/uploads/1/3/0/9/130969423/zuvij_pojenelil.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/1804/3040/files/61534724872.pdf
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/jisadisi.pdf
    • https://cdn.shopify.com/s/files/1/0440/5913/2054/files/jopixasaxa.pdf
    • https://cdn.shopify.com/s/files/1/0439/0505/6920/files/sajumi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3809/files/56795136598.pdf
    • https://cdn.shopify.com/s/files/1/0430/8031/9130/files/addis_ababa_city_administration_housing_agency_condominium_winners_list.pdf
    • https://cdn.shopify.com/s/files/1/0431/0079/9140/files/63837793582.pdf
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/40152017635.pdf
    • https://cdn.shopify.com/s/files/1/0431/6623/6834/files/bupozemid.pdf
    • https://cdn.shopify.com/s/files/1/0430/5793/8581/files/79903502757.pdf
    • https://cdn.shopify.com/s/files/1/0436/4291/2926/files/zomimomesekilireto.pdf
    • https://cdn.shopify.com/s/files/1/0434/4122/5880/files/injury_report_seahawks_49ers.pdf
    • https://cdn.shopify.com/s/files/1/0439/6518/6206/files/ctet._nic._in_answer_key_2020_download.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_off00005fa8.bin
8d73226e13c6f14f18a24ab4e071409cb6bcf5851d1b0888ebcf66e7520029ab
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA8 5380 bytes
font_01_sfnt_off00007213.bin
02b363a1887ce20aa008a8fea6d8b5f39addcff386a204029e36252fd07b141d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7213 10672 bytes