Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d01cd3531ad661e…

MALICIOUS

PDF

37.0 KB Created: 2020-09-01 06:48:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 062c7d91fa31ed31cec1c7b1a82e770f SHA-1: 5dc0d824aae2b9db438a196e985b03564dae3f53 SHA-256: 0d01cd3531ad661ee380ff838a10c586a70c61a0649a5d16cf06a8bb5d7c3b30
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, which is likely intended to lead the user to a phishing or scam page. The PDF also hosts a large number of links to other PDFs, suggesting a link farm or SEO manipulation tactic. The embedded content and structure strongly indicate a malicious intent to redirect users to harmful sites.

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.me/wix?keyword=whatsapp+status+sad++hd
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0439/7016/6942/files/tisujokitogogiwekaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/4849/2438/files/regedijutukozovususipi.pdf
    • https://cdn.shopify.com/s/files/1/0435/9651/3448/files/dejax.pdf
    • https://cdn.shopify.com/s/files/1/0438/0311/5680/files/far_out_ride.pdf
    • https://cdn.shopify.com/s/files/1/0432/1778/0896/files/61734392518.pdf
    • https://cdn.shopify.com/s/files/1/0432/0978/5512/files/cisco_spa508g_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/4381/4560/files/mevupomirob.pdf
    • https://cdn.shopify.com/s/files/1/0431/7013/6218/files/kizevujiwowipododotawex.pdf
    • https://cdn.shopify.com/s/files/1/0434/1917/3029/files/balancete_contabilidade.pdf
    • https://cdn.shopify.com/s/files/1/0434/0468/9558/files/zifedevovi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/jomotofefapevipexef.pdf
    • https://cdn.shopify.com/s/files/1/0434/0894/9402/files/29087725595.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_off00004b89.bin
f1700f224990fabf0b941c02feb61d7a2e9ce9e15b493c122f6c263e35c95df5
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B89 4932 bytes
font_01_sfnt_off00005c5f.bin
e1ed9d5f29e6c706b1bf4dd19df62fe84bd1c8a809e6144695c76da4ecabea0b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C5F 13536 bytes