Malicious PDF — malware analysis report

Static analysis result for SHA-256 3abc4a2eff7b435b…

MALICIOUS

PDF

42.5 KB Created: 2020-08-08 04:05:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2dd5e06740e1314bc888c72e64c96db9 SHA-1: 23bc437cfa2a153e6dd38eb355b098897166065d SHA-256: 3abc4a2eff7b435b7aeb222633ef8921bc2f0174bbcb83fc89a234a6adde7b1c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link that redirects to a malicious URL, likely as part of a phishing or scam campaign. The document body, though partially corrupted, contains text related to a '2020 cadillac srx navigation manual pdf' and the malicious redirector URL. The presence of a link farm suggests an attempt to game search engine results for malicious purposes.

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=2020+cadillac+srx+navigation+manual+pdf
    • http://files.cristianamente.org/uploads/1/3/0/7/130739524/5681599.pdf
    • http://files.yorktownpd.com/uploads/1/3/2/6/132683000/tokabuwofalowefirad.pdf
    • http://files.justritemarineinc.com/uploads/1/3/1/4/131438658/4092632.pdf
    • http://files.mary-ellenfriedland.com/uploads/1/3/1/3/131379919/1664858.pdf
    • http://files.justritemarineinc.com/uploads/1/3/1/4/131438658/4092
    • https://cdn.shopify.com/s/files/1/0430/7140/6241/files/rofulugivakofag.pdf
    • https://cdn.shopify.com/s/files/1/0428/3501/7895/files/50987800141.pdf
    • https://cdn.shopify.com/s/files/1/0430/7435/5351/files/zujakadiriravirazifu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5666/7551/files/27615328809.pdf
    • https://cdn.shopify.com/s/files/1/0436/1807/4786/files/76365751345.pdf
    • https://cdn.shopify.com/s/files/1/0433/5573/4166/files/jitunoxoduvakip.pdf
    • https://cdn.shopify.com/s/files/1/0432/9432/6942/files/xiwusapuxikuvupop.pdf
    • https://cdn.shopify.com/s/files/1/0434/0695/0550/files/behaviour_management_strategies_in_the_classroom.pdf
    • https://cdn.shopify.com/s/files/1/0429/7759/1449/files/steins_gate_ost.pdf
    • https://cdn.shopify.com/s/files/1/0429/1110/5183/files/ford_f250_4x4_manual_locking_hubs.pdf
    • https://cdn.shopify.com/s/files/1/0428/6778/5884/files/tubikikiwu.pdf
    • https://cdn.shopify.com/s/files/1/0435/9480/9507/files/logemawodixuri.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_off00006641.bin
cd793c7fc29bb2db67faefdc139d0cc2ad9233db961b013197d46961dbec6c0e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6641 5780 bytes
font_01_sfnt_off000079e0.bin
dff9ac00ca234fb1d7f381951c0e782db9bcff6d3b15e4b185da12c29eaa4a4f
pdf-font-stream PDF embedded font (sfnt) at offset 0x79E0 10144 bytes