Malicious PDF — malware analysis report

Static analysis result for SHA-256 5163ff998b42272a…

MALICIOUS

PDF

44.8 KB Created: 2020-08-05 03:20:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60e841ec9f8b27d8f005207110d742f7 SHA-1: ce8cd595c18b26b95387764e1afcc1bf73075915 SHA-256: 5163ff998b42272a372641903bfea273d37050f9969e78a3acdeb47ea25ba001
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at traff.ru. This suggests a link farm or SEO poisoning tactic designed to funnel users to malicious content. The document body, though heavily corrupted, contains the malicious URL and appears to be a lure related to a "partition piano valse". No scripts were extracted, limiting the analysis of direct execution capabilities.

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=partition+piano+valse+am%25C3%25A9lie+poulain+pdf
    • http://files.ptbomassage.com/uploads/1/3/0/7/130776519/wadofuvifivo.pdf
    • http://files.guesthouseouassaggou.com/uploads/1/3/1/4/131438509/8192980.pdf
    • http://fibefif.marschnereyemd.com/uploads/1/3/0/7/130775953/komulituxoxilure.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/riwenanezijatezoboj.pdf
    • https://cdn.shopify.com/s/files/1/0431/1816/6167/files/58449146882.pdf
    • https://cdn.shopify.com/s/files/1/0436/0781/8398/files/wofolajowogar.pdf
    • https://cdn.shopify.com/s/files/1/0432/6536/0027/files/48809856262.pdf
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/79856044522.pdf
    • https://cdn.shopify.com/s/files/1/0435/0964/5478/files/27930327609.pdf
    • https://cdn.shopify.com/s/files/1/0431/4667/4330/files/kulajitigujowiludenuxit.pdf
    • https://cdn.shopify.com/s/files/1/0437/0595/8565/files/internet_of_things_examples.pdf
    • https://cdn.shopify.com/s/files/1/0428/2207/4534/files/23829449612.pdf
    • https://cdn.shopify.com/s/files/1/0432/8144/9118/files/83165293781.pdf
    • https://cdn.shopify.com/s/files/1/0436/9501/4042/files/92603222777.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8863/files/1995_isuzu_trooper_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0413/files/99538076065.pdf
    • https://cdn.shopify.com/s/files/1/0432/3239/5426/files/mathematical_analysis_walter_rudin.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000563a.bin
484c624ad9fd0241b37861ca8da835f1dc437b463a882801ae096fbf99c649d2
pdf-font-stream PDF embedded font (sfnt) at offset 0x563A 5392 bytes
font_01_sfnt_off0000683b.bin
f81c7c14984d0308dbeb1d7af9d2bcad99c41d09dceccee91c62ef2b30eb5867
pdf-font-stream PDF embedded font (sfnt) at offset 0x683B 11660 bytes
font_02_sfnt_off00008d9e.bin
bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D9E 16312 bytes