Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f7708da7c0f24cb…

MALICIOUS

PDF

40.7 KB Created: 2020-08-15 03:32:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c079b70826573ac9e7265f37115d88b6 SHA-1: eae7ab047a2dcd723701a2974c40fe82542eb8e8 SHA-256: 0f7708da7c0f24cbf70e8f3594c105192521ce11781cc15f23cad02987fa78fd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to external PDF files, indicating a link farm. One of the primary links, https://ttraff.ru/pify?keyword=beach+boy+ardashir+vakil+pdf, is identified as a malicious redirector. This suggests the document is designed to lure users into clicking these links, potentially leading to further malicious content or exploitation.

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.ru/pify?keyword=beach+boy+ardashir+vakil+pdf
    • http://josuxonez.allieetoile.com/uploads/1/3/1/4/131406343/731745.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/3960/3360/files/26298566231.pdf
    • https://cdn.shopify.com/s/files/1/0438/4302/7104/files/guzixoxuxozejosaferexuw.pdf
    • https://cdn.shopify.com/s/files/1/0432/9137/7828/files/60980296254.pdf
    • https://cdn.shopify.com/s/files/1/0430/2438/4154/files/xogafaziwo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6354/9845/files/gibijijidiketobisix.pdf
    • https://cdn.shopify.com/s/files/1/0432/0568/9504/files/mepazen.pdf
    • https://cdn.shopify.com/s/files/1/0436/3993/1038/files/dubai_metro_red_line_map.pdf
    • https://cdn.shopify.com/s/files/1/0429/5104/9370/files/kabusit.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/pevikoruwikise.pdf
    • https://cdn.shopify.com/s/files/1/0436/6086/9785/files/allahabad_university_ma_english_syllabus.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_off000061f3.bin
dcf6a5aefb67118609040ed8ea516bbbc3e0191c3ee5b9a8281ea36b707a395b
pdf-font-stream PDF embedded font (sfnt) at offset 0x61F3 5656 bytes
font_01_sfnt_off0000752b.bin
89c716673ae7354132c2040c5c955d050cf96b36c8183ff8c3185da03dc7846d
pdf-font-stream PDF embedded font (sfnt) at offset 0x752B 9816 bytes