Malicious PDF — malware analysis report

Static analysis result for SHA-256 074c7ae50ba73005…

MALICIOUS

PDF

52.2 KB Created: 2020-08-11 18:11:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 126f5cf32f434fc726f06fde57c870b4 SHA-1: 0aa419d5cc724be166c719cabf5d61762268b8b1 SHA-256: 074c7ae50ba7300521ab5dee80969a4d8e97ef64411b31601fabc6240555fc2c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one pointing to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains text suggesting it is a 'babysitting application pdf' and includes the malicious URL. This indicates a phishing or scam attempt, likely using the PDF as a lure to redirect users to malicious content.

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.com/pify?keyword=babysitting+application+pdf
    • http://files.glennmehrbach.com/uploads/1/3/2/6/132682883/pagamotidujaloxixin.pdf
    • http://files.ecoringusa.com/uploads/1/3/1/1/131164572/06bec0273.pdf
    • http://parinu.criminallyinteresting.net/uploads/1/3/2/8/132814930/7848017.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0439/3969/2699/files/san_francisco_bart_map.pdf
    • https://cdn.shopify.com/s/files/1/0431/7279/0427/files/13036380954.pdf
    • https://cdn.shopify.com/s/files/1/0431/6931/7013/files/jiwixepuxesuzobidoka.pdf
    • https://cdn.shopify.com/s/files/1/0433/6133/7494/files/97213046198.pdf
    • https://cdn.shopify.com/s/files/1/0433/3282/9342/files/15510798631.pdf
    • https://cdn.shopify.com/s/files/1/0435/3074/8072/files/jobudosemusereg.pdf
    • https://cdn.shopify.com/s/files/1/0437/6389/2376/files/jijulotakodotawopelitod.pdf
    • https://cdn.shopify.com/s/files/1/0438/3752/2085/files/62218998365.pdf
    • https://cdn.shopify.com/s/files/1/0432/6939/0500/files/bosch_ascenta_dishwasher_manual.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_off00008df6.bin
7bce78321ba59aa9f94291ef6ccb48a9f620a3a464220eaf879e953897f9daaf
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF6 5520 bytes
font_01_sfnt_off0000a0c3.bin
34cc2bb13880ee0a27c5395c5f646e6a7cac177c23eaf7fde9ce95c950dab544
pdf-font-stream PDF embedded font (sfnt) at offset 0xA0C3 10500 bytes