Malicious PDF — malware analysis report

Static analysis result for SHA-256 23e6c8f2cf5b0dd5…

MALICIOUS

PDF

42.7 KB Created: 2020-08-24 14:19:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db09096484ec5a8363e0d1f5518013e2 SHA-1: d3cadfae44569a9918c9e9ad4ecf347d823d02c2 SHA-256: 23e6c8f2cf5b0dd5695c30f2aa77c1816f37ccd88aaf712e04d14b361ce2e8dd
152 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The document body contains the URL https://ttraff.ru/pify?keyword=reporting+agent+list+template, which is also listed as a malicious redirector. This suggests the PDF is designed to lure users to malicious sites through a chain of redirects.

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=reporting+agent+list+template
    • http://maveresuz.cornerstonecowboychurch.org/uploads/1/3/0/7/130738765/vopovumadawamaf.pdf
    • http://files.patapscomusic.com/uploads/1/3/2/8/132814030/1752048.pdf
    • https://cdn.shopify.com/s/files/1/0432/3105/1931/files/kifivezudowovasigulewibis.pdf
    • https://cdn.shopify.com/s/files/1/0431/2940/5600/files/mubimukopipavejaxixerinif.pdf
    • https://cdn.shopify.com/s/files/1/0432/5346/5243/files/fivamefomexa.pdf
    • https://cdn.shopify.com/s/files/1/0435/6925/0463/files/76375661668.pdf
    • https://cdn.shopify.com/s/files/1/0431/8386/6007/files/jinis.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8342/files/dapusojadomajafimaxakonu.pdf
    • https://cdn.shopify.com/s/files/1/0440/6683/2534/files/bradycardia_acls_algorithm.pdf
    • https://cdn.shopify.com/s/files/1/0438/4364/9698/files/mazeti.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_off00006b9d.bin
e6178ea4ea5f20e9bcd02aebe8420ff9d97bd1d33b7061c0c842af4ec0451ce0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9D 5144 bytes
font_01_sfnt_off00007d0a.bin
566513d44739b17150a3f9e6dc86377c722be1405b96a132e913b688ab9d7d12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D0A 9624 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.