Malicious PDF — malware analysis report

Static analysis result for SHA-256 119214d379cce9b8…

MALICIOUS

PDF

54.1 KB Created: 2020-09-06 16:43:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b21d6b726aa05a9323fd4d82b296398c SHA-1: 27d62141a19394b2691e8b04640f2107b8d1d1f8 SHA-256: 119214d379cce9b8f7e3f8cdf6090514b57a73fed948d31d5d2f4159a6cf2b74
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains a link farm of 13 PDF documents, with the primary link leading to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.link/wix?keyword=free+new+hire+checklist+template+word', suggesting a lure for users searching for templates. The ML classifier and PDF redirector heuristics strongly indicate malicious intent, likely to deliver a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.link/wix?keyword=free+new+hire+checklist+template+word
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/c1de29_934c711670ba44258f9fb0c3fc783e51.pdf
    • https://static.usrfiles.com/ugd/954c8b_b03cfe535a4c480db9e3b056216712a1.pdf
    • https://static.usrfiles.com/ugd/37321e_410d71eeb74d4ce4bd6bd0379e97d7ae.pdf
    • https://static.usrfiles.com/ugd/a01749_b09642aaefdc48f9aa808684b4e54bb9.pdf
    • https://static.usrfiles.com/ugd/fa32a6_57a0d7de01a240d6991fb1f2a555038f.pdf
    • https://static.usrfiles.com/ugd/9bd8c3_e2e943c320b648a7abc9d9b79930571f.pdf
    • https://static.usrfiles.com/ugd/857e61_554d08c5b53541fbb7ee695fedd12fbc.pdf
    • https://static.usrfiles.com/ugd/8acad3_a6ff0e1e0cfd4e89b846f106be17f25b.pdf
    • https://static.usrfiles.com/ugd/b11f6d_d2b825d06d074a1da3f20a819f598d8d.pdf
    • https://cdn.shopify.com/s/files/1/0432/8757/6740/files/zulegorubej.pdf
    • https://cdn.shopify.com/s/files/1/0430/7098/0247/files/84401666589.pdf
    • https://cdn.shopify.com/s/files/1/0433/7991/6963/files/do_cats_and_dogs_google_feud_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/7516/6620/files/bikegututolevog.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_off00009472.bin
7be4424945a7a3b6c076774c0ab6efbf70ca312cd04332cc70266e695e80e5e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9472 5424 bytes
font_01_sfnt_off0000a6cd.bin
6daade38b2b29b262c437614ddcda4bf34fde3e5d7b2971297449e2ee56abb5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6CD 10700 bytes

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