Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a6e6ba304ae640…

MALICIOUS

PDF

43.6 KB Created: 2020-08-02 19:11:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a8dbf39661610fe9cb523181f5d5516 SHA-1: d6c65e2cd604aeba4b771fec5427251464f7040b SHA-256: 30a6e6ba304ae640ea8da8327afaeedd9066eac5e8f2a1ddb659a0c87be9cd79
154 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier as malicious and contains a critical heuristic indicating it links to known malicious redirector infrastructure. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to external resources. The presence of the URL 'https://ttraff.cc/pify?keyword=python+menu+loop' suggests a redirection attempt, likely to a malicious site or for further payload 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/pify?keyword=python+menu+loop
    • http://files.vulcanproductions.co.uk/uploads/1/3/2/3/132303045/fubabo.pdf
    • http://files.tessacase.co.uk/uploads/1/3/1/8/131872178/3125857.pdf
    • http://files.charankainth.com/uploads/1/3/2/6/132683080/f62e64c6bf49c3.pdf
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/mosevuserojutokuro.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/mazekoju.pdf
    • https://cdn.shopify.com/s/files/1/0437/3735/0309/files/71557811332.pdf
    • https://cdn.shopify.com/s/files/1/0437/3217/2965/files/79547555352.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29121996303.pdf
    • https://cdn.shopify.com/s/files/1/0431/3514/0007/files/introductory_statistics_gould_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0431/7052/9436/files/saints_row_4_cheat_codes.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vinupagudesezubinu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1560/2337/files/vivuvokoboxapalenujexon.pdf
    • https://cdn.shopify.com/s/files/1/0433/2650/5128/files/32160083302.pdf
    • https://cdn.shopify.com/s/files/1/0438/1786/1277/files/bomedaxa.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_off00006fde.bin
0951f0ab140947dd9a430f7a70ba6b5721d108ee3644f814afa1423f4bb707fc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDE 4676 bytes
font_01_sfnt_off00007fac.bin
e75ca1834bcf3b7a1cb80ff90b8c5f092ba7180f07021264369720260387a68d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FAC 10040 bytes