Malicious PDF — malware analysis report

Static analysis result for SHA-256 68d32a2260fb70e4…

MALICIOUS

PDF

38.4 KB Created: 2020-08-18 20:24:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 763bdfaf67ed2598eb8d49ebbae44c6b SHA-1: f31fba390f040219b42adfa87d8ecebe16b70365 SHA-256: 68d32a2260fb70e46c891083e4e9f7a4e1bf304f8b2e4822db8cc6385ae15496
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links directs to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the malicious URL, suggesting an attempt to lure users to 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.cc/pify?keyword=spectrum+mi+plan+latino+channel+guide
    • http://files.thelightersideofme.com/uploads/1/3/0/9/130969358/tepudefuwazame.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/1712/6567/files/55518467000.pdf
    • https://cdn.shopify.com/s/files/1/0429/3004/5084/files/lipomilapuwebew.pdf
    • https://cdn.shopify.com/s/files/1/0434/6177/1430/files/hallelujah_notes_piano.pdf
    • https://cdn.shopify.com/s/files/1/0434/0790/0835/files/netizawisubajesenunewa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44411244229.pdf
    • https://cdn.shopify.com/s/files/1/0436/9950/3257/files/jonolutefugosu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0894/2499/files/11032615650.pdf
    • https://cdn.shopify.com/s/files/1/0432/1158/7752/files/skyrim_books_beggar_thief_warrior_king.pdf
    • https://cdn.shopify.com/s/files/1/0428/6958/8124/files/kefifeminebekebitopuxesuv.pdf
    • https://cdn.shopify.com/s/files/1/0434/1966/4540/files/39548778686.pdf
    • https://cdn.shopify.com/s/files/1/0432/7941/7504/files/sipilalojufepamosololum.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_off000056d1.bin
2f5bb3181de981ec375df309d4931baeead90c88e937d2154446e4233644a977
pdf-font-stream PDF embedded font (sfnt) at offset 0x56D1 5412 bytes
font_01_sfnt_off00006906.bin
6a1005ac6c40d3818a71e9e8a9a27ac205e52d2833a0c0bba020b5f092502bdb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6906 10680 bytes