Malicious PDF — malware analysis report

Static analysis result for SHA-256 606b0f73788c47c9…

MALICIOUS

PDF

46.5 KB Created: 2020-08-09 20:41:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2cc9a845929f58662bc8a0cac15b35f7 SHA-1: e73eea77d743109f72ebe37e342a7889c26e8b90 SHA-256: 606b0f73788c47c9aed2c681307c37a4ab2acf6385bde79250cc4a84ce198a05
154 Risk Score

Malware Insights

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

This PDF document contains a malicious redirector link disguised as a bursary application form. The document leverages a link farm technique, embedding numerous external PDF links, with the primary malicious link pointing to 'https://ttraff.com/pify?keyword=foskor+bursary+application+form+pdf'. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence suggest a malicious intent to redirect the user to harmful content, likely for phishing or malware distribution.

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=foskor+bursary+application+form+pdf
    • http://files.wilywestproductions.com/uploads/1/3/0/8/130814411/wabusimolofan.pdf
    • http://files.reflexologylymphdrainage.co.uk/uploads/1/3/1/4/131453060/a3f9b2d01196.pdf
    • http://files.laurennicoleanderson.com/uploads/1/3/0/8/130874676/17d2a31e1.pdf
    • http://files.larissafall.com/uploads/1/3/0/9/130969873/namoralonosufirif.pdf
    • http://files.milehighed.org/uploads/1/3/2/6/132681513/b18cace.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/5327/5546/files/vikelijajegapemidixewufab.pdf
    • https://cdn.shopify.com/s/files/1/0438/0898/1153/files/88407623952.pdf
    • https://cdn.shopify.com/s/files/1/0432/2295/8248/files/mckinsey_capacity_assessment_grid.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/zasavu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4227/4454/files/nivadenanexe.pdf
    • https://cdn.shopify.com/s/files/1/0431/0433/8074/files/51424166553.pdf
    • https://cdn.shopify.com/s/files/1/0428/1820/7911/files/tugegal.pdf
    • https://cdn.shopify.com/s/files/1/0433/3725/3023/files/bioelectricity_a_quantitative_approach.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/indiana_st-_105.pdf
    • https://cdn.shopify.com/s/files/1/0432/7309/3288/files/xutenerigoxegejim.pdf
    • https://cdn.shopify.com/s/files/1/0434/1579/7917/files/88348349136.pdf
    • https://cdn.shopify.com/s/files/1/0431/1023/6321/files/65117543645.pdf
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/cormyr_the_tearing_of_the_weave.pdf
    • https://cdn.shopify.com/s/files/1/0437/6566/1845/files/97428286948.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_off0000762f.bin
35a7dcb4d1e8eb0f59353cbb894668997863cef673f4bec29533f97db9eadbb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x762F 5564 bytes
font_01_sfnt_off00008913.bin
82c68f3db0077433415dfcf38594137ddca2a11948dea4bf8322c1aadcd37008		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8913 10512 bytes

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