Malicious PDF — malware analysis report

Static analysis result for SHA-256 060a935f74114eb1…

MALICIOUS

PDF

40.8 KB Created: 2020-08-10 14:21:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 541e59d7d3028f53ccdb39e458ac676f SHA-1: 91fab4dfdf67e63ce7220567c2492d065e744c9c SHA-256: 060a935f74114eb1323bb73a4ef8d61369012a392a32febb8d6a4c91c92a26a1
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a link farm designed to manipulate search engine results. One prominent link, disguised as a tutorial, redirects through known malicious infrastructure. This suggests a phishing or scam attempt, likely using the PDF as an attachment in a spearphishing campaign.

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=adobe+indesign+cs6+tutorial+for+beginners+pdf
    • http://zujepoko.emikoota.com/uploads/1/3/0/7/130738531/c8589.pdf
    • http://files.lallakhadijasweets.com/uploads/1/3/2/3/132303082/5274971.pdf
    • http://files.graftonminorhockeyassociation.com/uploads/1/3/1/4/131437306/venizorigu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/62528441945.pdf
    • https://cdn.shopify.com/s/files/1/0435/5879/7463/files/fejopuzokikuta.pdf
    • https://cdn.shopify.com/s/files/1/0429/9731/7783/files/jikumolonulu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0707/4723/files/suniwaremalawopafemunu.pdf
    • https://cdn.shopify.com/s/files/1/0444/3917/5335/files/important_days_in_2020_with_themes.pdf
    • https://cdn.shopify.com/s/files/1/0431/6305/8340/files/10116713553.pdf
    • https://cdn.shopify.com/s/files/1/0431/4329/9234/files/vokipetenixumejobitifek.pdf
    • https://cdn.shopify.com/s/files/1/0433/3263/2730/files/16399343307.pdf
    • https://cdn.shopify.com/s/files/1/0434/2834/8056/files/74601535697.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gigogew.pdf
    • https://cdn.shopify.com/s/files/1/0430/8867/4967/files/nukevisidejezig.pdf
    • https://cdn.shopify.com/s/files/1/0433/7834/4097/files/albert_camus_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0428/4219/4083/files/dozejukujo.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_off0000609f.bin
0d26775869f5b0c6482bcacd0c4c27497c4267610ac6363ed387f6181751efde
pdf-font-stream PDF embedded font (sfnt) at offset 0x609F 5604 bytes
font_01_sfnt_off000073b3.bin
27d380cb28952f9b82a302e32c471f60084e13c27bf86973bcb861e777c71c4c
pdf-font-stream PDF embedded font (sfnt) at offset 0x73B3 10184 bytes