Malicious PDF — malware analysis report

Static analysis result for SHA-256 207680f13633ecd1…

MALICIOUS

PDF

42.0 KB Created: 2020-08-01 10:25:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 10e1bfeb41fc6b2306f1355c26dbbc1a SHA-1: 3d1aacba795afb1b290bdcd2eadaf4000d35c9d0 SHA-256: 207680f13633ecd12c7121014e61561bf90983449f58f1bb93df44a2e7696f47
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm and a specific malicious redirector URL, indicating a phishing or scam attempt. The primary malicious link is https://ttraff.ru/pify?keyword=fallout+4+guide+pdf+download, which is designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains keywords related to the lure. No scripts were extracted from this sample.

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=fallout+4+guide+pdf+download
    • http://files.madaassoc.org/uploads/1/3/1/4/131407802/cfdddb10.pdf
    • http://files.maryjanescott.com/uploads/1/3/2/6/132681783/48d7637.pdf
    • http://files.makikicommunitygarden.com/uploads/1/3/1/6/131606965/bununeka.pdf
    • http://files.kelownanaturopathicdoctor.ca/uploads/1/3/1/3/131379894/3365423.pdf
    • https://cdn.shopify.com/s/files/1/0429/6353/3977/files/88851180342.pdf
    • https://cdn.shopify.com/s/files/1/0431/6227/1898/files/wodigebabuzanuriva.pdf
    • https://cdn.shopify.com/s/files/1/0434/1566/6849/files/garigav.pdf
    • https://cdn.shopify.com/s/files/1/0432/0532/9064/files/53292837856.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xiguxalenagidofivixonagez.pdf
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/44624917609.pdf
    • https://cdn.shopify.com/s/files/1/0433/8391/4654/files/9185385579.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8903/files/41803108582.pdf
    • https://cdn.shopify.com/s/files/1/0432/1663/4016/files/norevobufomamafav.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejumaxerufu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6983/2342/files/technical_drawing_with_engineering_graphics_15th_edition.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066fc.bin
98a32530885a215ed5b9adfb6023fe13c372f3e795ff8881330e22200c287c11
pdf-font-stream PDF embedded font (sfnt) at offset 0x66FC 5072 bytes
font_01_sfnt_off00007875.bin
b0deb3e31e6ccedaaafafc4e8651415d35be686a4b778dcd97f9b82274598dee
pdf-font-stream PDF embedded font (sfnt) at offset 0x7875 10244 bytes