Malicious PDF — malware analysis report

Static analysis result for SHA-256 01d3c19e580c8bde…

MALICIOUS

PDF

47.3 KB Created: 2020-08-18 23:56:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f66fce0166043b9584d1325e41606e3 SHA-1: d51a32b7129e1b8a9b97fbb3ffd65e337a1c3b2d SHA-256: 01d3c19e580c8bdefedfaa91a971ca2236379482e2132274e967a5be5046827f
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link pointing to 'ttraff.ru', indicating a phishing or scam attempt. The document body, though partially corrupted, includes the same redirector URL and references a 'doodle god technology guide', suggesting a lure. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector.

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=doodle+god+technology+guide
    • http://files.noblesmed2.com/uploads/1/3/0/7/130739719/riguwuji-vakoviwavifiz.pdf
    • http://files.theseniorsage.com/uploads/1/3/0/8/130814121/5981684.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/9775089030.pdf
    • https://cdn.shopify.com/s/files/1/0428/6811/3574/files/17299970367.pdf
    • https://cdn.shopify.com/s/files/1/0434/7320/7446/files/android_time_zones.pdf
    • https://cdn.shopify.com/s/files/1/0428/7057/1174/files/android_studio_bitmap._createbitmap.pdf
    • https://cdn.shopify.com/s/files/1/0434/3414/7989/files/98088943330.pdf
    • https://cdn.shopify.com/s/files/1/0444/3268/7271/files/lagu_bol4_25_matikiri.pdf
    • https://cdn.shopify.com/s/files/1/0431/3104/4007/files/anthony_robbins_books_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/3142/8248/files/fikapupodemugusigotin.pdf
    • https://cdn.shopify.com/s/files/1/0437/7663/9127/files/types_of_chemical_reactions_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/2872/5405/files/63479445021.pdf
    • https://cdn.shopify.com/s/files/1/0434/0069/1862/files/dukolovigitopedewebef.pdf
    • https://cdn.shopify.com/s/files/1/0450/1677/6868/files/jizafipew.pdf
    • https://cdn.shopify.com/s/files/1/0431/1007/2481/files/81841554150.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_off00007c7e.bin
8ad747fae7e301a279a7cc9c5a931a8de26dc80902440785773ff3a77cbb89a5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C7E 4820 bytes
font_01_sfnt_off00008cec.bin
2c0b1427ed4a5f93df0e75990de254a93ff845ccca541069b3e3016170423b57
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CEC 10280 bytes