Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fe9ba54c4ed0f02…

MALICIOUS

PDF

34.1 KB Created: 2020-08-30 04:22:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32753349db37a6fa35e1ea3dc61d7c6d SHA-1: 205fb115d4e89e1d372a8da53f3308575d90696e SHA-256: 1fe9ba54c4ed0f02f8b9df4dd2ad946822fdb44f642be866a071edb636a83a8f
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=international+dt466+service+manual'. Additionally, it exhibits a PDF link farm behavior, with numerous links to external PDFs hosted on platforms like Shopify and usrfiles.com. The ML classifier also strongly flagged this PDF as malicious. The primary intent appears to be redirecting users to malicious sites, likely for phishing or malware delivery.

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/wix?keyword=international+dt466+service+manual
    • https://cdn.shopify.com/s/files/1/0429/1143/2857/files/miborunovowoz.pdf
    • https://cdn.shopify.com/s/files/1/0440/2328/3862/files/nbr_7211.pdf
    • https://cdn.shopify.com/s/files/1/0431/6784/2455/files/abb_lightning_arrester.pdf
    • https://cdn.shopify.com/s/files/1/0430/7265/1413/files/fideruxif.pdf
    • https://cdn.shopify.com/s/files/1/0429/7801/7443/files/arlington_value_2018_performance.pdf
    • https://static.usrfiles.com/ugd/b8c837_b18c0ffc66744c3c871f2457452c1d9d.pdf
    • https://static.usrfiles.com/ugd/b8c837_2d075c833b8c441498b884f0f9adf0fa.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_7b6b57c08b604f3bbe18aa12929372a5.pdf
    • https://cdn.shopify.com/s/files/1/0437/4138/0759/files/rectangular_prism_net_printable.pdf
    • https://cdn.shopify.com/s/files/1/0436/8728/0790/files/41794003845.pdf
    • https://cdn.shopify.com/s/files/1/0433/8637/2246/files/tejogajupulejewaratabo.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc08f15142aa476e932659dbf9068f2d.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0c8a16ae9fd42148cd2b3a92c7fa96d.pdf
    • https://static.usrfiles.com/ugd/b8c837_66e615173dc842f485a4b6990aa8b426.pdf
    • https://static.usrfiles.com/ugd/b8c837_c8706194b2784bffb92f0f6b55bfda2f.pdf
    • https://static.usrfiles.com/ugd/b8c837_9025036dbb73489ea427cea1acc51b50.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_off00004814.bin
76a3f5f1368eb0300dd44bc40ce8fa79c60c25be4ce7af288bac31e515bde56f
pdf-font-stream PDF embedded font (sfnt) at offset 0x4814 5324 bytes
font_01_sfnt_off00005a1e.bin
3c513f1ab04c5b7bc77a9a93a4537bad259501f0a7ee46271c6c9e78252b2b0f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A1E 10016 bytes