Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ef2348824a92ef1…

MALICIOUS

PDF

51.5 KB Created: 2020-08-20 19:43:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90d1d9f6cfc806efa22dd4f56660b743 SHA-1: 7127d1dbbae428f1a81c35753641168dfdcf082f SHA-256: 2ef2348824a92ef1be1000dc37d64a4f2e14fb754cd6c3102b79ea8720d414b0
120 Risk Score

Malware Insights

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

The PDF file contains a lure related to drawing trees, but the primary malicious activity is indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. This heuristic fired because the document contains a link to `https://ttraff.com/pify?keyword=como+dibujar+arboles+a+lapiz+pdf`, which is known malicious redirector infrastructure. The PDF_SEO_LINK_FARM heuristic indicates the document is part of a link farm, likely to improve search engine ranking for malicious content. No scripts were extracted from this sample.

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.com/pify?keyword=como+dibujar+arboles+a+lapiz+pdf
    • http://files.caseyelewis.com/uploads/1/3/1/6/131606822/c56ed58908284.pdf
    • http://files.twocentcomics.com/uploads/1/3/1/4/131406537/golagufarumopu-kajir-xopesowujuwa-bolurobizuno.pdf
    • http://files.tamiesfurniture.com/uploads/1/3/0/7/130775261/f8d251c0e0b.pdf
    • http://satebegi.firstumcds.org/uploads/1/3/1/6/131606339/2093311.pdf
    • https://cdn.shopify.com/s/files/1/0428/5405/6092/files/rokaz.pdf
    • https://cdn.shopify.com/s/files/1/0435/9431/7981/files/gojixosezokorira.pdf
    • https://cdn.shopify.com/s/files/1/0431/0922/0503/files/cng_dng_thuc_metformin_stada_500mg.pdf
    • https://cdn.shopify.com/s/files/1/0440/4733/5589/files/58374324798.pdf
    • https://cdn.shopify.com/s/files/1/0431/3474/6790/files/gufebazipo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1188/2653/files/sodesozur.pdf
    • https://cdn.shopify.com/s/files/1/0429/9964/4314/files/kavazumajusokad.pdf
    • https://cdn.shopify.com/s/files/1/0428/7869/7631/files/rulokojokumumivewos.pdf
    • https://cdn.shopify.com/s/files/1/0432/0821/2638/files/chamara_weerasinghe_audio_album.pdf
    • https://cdn.shopify.com/s/files/1/0431/9870/9918/files/76233018904.pdf
    • https://cdn.shopify.com/s/files/1/0460/1436/5855/files/95286651475.pdf
    • https://cdn.shopify.com/s/files/1/0432/6028/0982/files/peteriwos.pdf
    • https://cdn.shopify.com/s/files/1/0432/7096/3350/files/cinderella_full_story.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_off00007a88.bin
6377e664e31689714f39ee16cf253bbe0ebd1caae7154425d89e1c846d8d4b03
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A88 5172 bytes
font_01_sfnt_off00008c23.bin
88d924633a90bcf4476ae706b36c427d08638120643acc48eabc1e01970d3995
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C23 11580 bytes
font_02_sfnt_off0000b0bd.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xB0BD 4324 bytes