Malicious PDF — malware analysis report

Static analysis result for SHA-256 101209f6fddde158…

MALICIOUS

PDF

47.3 KB Created: 2020-08-22 13:04:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b04642f414d02f89b6c1bba90182297 SHA-1: 28a4907763e583a34336608d337491006f0cdfd0 SHA-256: 101209f6fddde1585079c6d022ce6f034f9e0c7c4e2a7bd17a47b1964ca2f38a
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a download for 'Premiere pro templates nulled'. The document also contains a large number of links to other PDFs hosted on various domains, suggesting a link farm or SEO poisoning attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious intent to redirect users to potentially harmful 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=premiere+pro+templates+nulled
    • http://files.kinderdagverblijfzandopdemat.nl/uploads/1/3/1/4/131452838/waziva.pdf
    • http://wimof.rescuecandlewoodmountain.org/uploads/1/3/1/1/131164250/nijotewarokisa.pdf
    • http://files.dantothmusic.com/uploads/1/3/1/6/131637656/vulowepiziperutoxow.pdf
    • http://files.highpointireland.com/uploads/1/3/0/8/130874411/8826355.pdf
    • http://files.vintageedinburgh.com/uploads/1/3/0/7/130739490/debere-dagugo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93527538138.pdf
    • https://cdn.shopify.com/s/files/1/0431/4539/6386/files/81265168188.pdf
    • https://cdn.shopify.com/s/files/1/0434/9237/6741/files/fjalor_ekonomik_anglisht_shqip.pdf
    • https://cdn.shopify.com/s/files/1/0439/1242/9723/files/degamiterijokan.pdf
    • https://cdn.shopify.com/s/files/1/0433/7818/0259/files/autocad_orthographic_drawing_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bararilisubolubudikolumo.pdf
    • https://cdn.shopify.com/s/files/1/0428/6378/8188/files/vuvisuwevobowoxo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9371/2286/files/soredorovemipovoxit.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_off00007b8b.bin
0c3eba942c26f12865ce82f287bbc503ebd938b25a1cf58b21699b26a5c81faf
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8B 5104 bytes
font_01_sfnt_off00008cba.bin
a5ee9aee20860e665da7b2327fdda8d31de6312bcec8179c68a901431f006b1d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CBA 10508 bytes