Malicious PDF — malware analysis report

Static analysis result for SHA-256 033ffbc328156c3f…

MALICIOUS

PDF

40.1 KB Created: 2020-08-03 19:01:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 617e2882b295b6f3a97a0796fb302ffa SHA-1: bc58d4603d15bbcc00b7858acdd1d08fe8e50ad5 SHA-256: 033ffbc328156c3fae0ac362589de3f099eb1f69fa96a36df9850f2dcf7ba686
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, masquerading as information about "Canadian solar 400w pdf". The primary link, https://ttraff.com/pify?keyword=canadian+solar+400w+pdf, is identified as a malicious redirector. The document's structure and extensive link farm suggest 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.com/pify?keyword=canadian+solar+400w+pdf
    • http://files.maryqueenofireland.com/uploads/1/3/1/3/131380467/jizotonewi_mufixoxu_kozafikelaso_wodisa.pdf
    • http://files.dorewe.com/uploads/1/3/1/3/131398542/8290615d9.pdf
    • http://nagudenod.6038838400.com/uploads/1/3/2/6/132695329/vaxebesagudod.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/9488/4000/files/12102107269.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6514/files/88693961721.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tiwimuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6073/1808/files/91634068340.pdf
    • https://cdn.shopify.com/s/files/1/0429/5314/6517/files/nulenosutijabojarixibo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bugos.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/zasujomom.pdf
    • https://cdn.shopify.com/s/files/1/0430/9699/8048/files/ruvabopijijolono.pdf
    • https://cdn.shopify.com/s/files/1/0431/9513/8208/files/mebaxidebasegip.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/50506875709.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_off00005460.bin
aa57a79e59173fa97a9621d80773c9e5c653cfd45b44fce245f832478445720d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5460 5260 bytes
font_01_sfnt_off00006665.bin
32bfe2b54210131a0e1bdcb8d13f85decd3d208bded3159235c66ffc3eb66798
pdf-font-stream PDF embedded font (sfnt) at offset 0x6665 14660 bytes