Malicious PDF — malware analysis report

Static analysis result for SHA-256 056f47ac19d571e4…

MALICIOUS

PDF

41.4 KB Created: 2020-08-30 10:05:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd6b9464b7b16d955b14216864ce006d SHA-1: 6223269a1afaf9df2b5153b9b35e553540c9b6f2 SHA-256: 056f47ac19d571e41379fde720993402ac9a4f0e69fe673bd1cfad9fd6627c11
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=simulacra+and+simulation+pdf'. This link is presented within the document body, suggesting a phishing or social engineering attempt to redirect the user to malicious infrastructure. The presence of a large number of external PDF links further supports a link farm or SEO poisoning tactic, aiming to drive traffic to potentially harmful sites.

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=simulacra+and+simulation+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/225520_470e491c336a4d23aa2c1c659b7dcb12.pdf
    • https://static.usrfiles.com/ugd/b8c837_8e05623e3ceb464f836ccff069055db1.pdf
    • https://static.usrfiles.com/ugd/b8c837_49125088aa2249d98fcd5d7697daa921.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/12217763029.pdf
    • https://cdn.shopify.com/s/files/1/0433/1218/5494/files/pneumonia_kongenital_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0431/6944/8097/files/minajumivo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7904/9121/files/guzarovarekewatewoxel.pdf
    • https://cdn.shopify.com/s/files/1/0427/7331/5740/files/lofumi.pdf
    • https://cdn.shopify.com/s/files/1/0437/0356/6486/files/87571279967.pdf
    • https://cdn.shopify.com/s/files/1/0433/6150/1336/files/yoga_asanas_names_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0219/2287/files/mibelidanuwanitoz.pdf
    • https://cdn.shopify.com/s/files/1/0435/5548/7905/files/88339290402.pdf
    • https://cdn.shopify.com/s/files/1/0430/1937/0659/files/73093343258.pdf
    • https://cdn.shopify.com/s/files/1/0431/2819/3184/files/jisebow.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_off000064ef.bin
3af6aa1905b8a4283d2ea57d6eb84063323f55eb4e6bf76e64d6edddb54eae19
pdf-font-stream PDF embedded font (sfnt) at offset 0x64EF 5404 bytes
font_01_sfnt_off0000772a.bin
aa2a1d27963091b35d2fa54f3c3cb3830d76083d9835f88eec55c20e98cfa750
pdf-font-stream PDF embedded font (sfnt) at offset 0x772A 9940 bytes