Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d6eca4fc5febf82…

MALICIOUS

PDF

42.6 KB Created: 2020-08-25 00:53:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c67ba6c3a656384fa38980624d367ff4 SHA-1: dc8fb6bd79694750c15ad06f599785f070c6571b SHA-256: 6d6eca4fc5febf8225c464f84b6550460fa29480596f797ea197ecf16a25126a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to external PDFs hosted on various domains, suggesting a link farm or SEO manipulation tactic. One URL, https://ttraff.ru/pify?keyword=hebrew+christian+songs+mp4, is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=hebrew+christian+songs+mp4
    • http://files.pheasanthillgardens.org/uploads/1/3/0/9/130969623/9983573.pdf
    • http://files.liveactionguideservice.com/uploads/1/3/2/3/132303338/suwarikitamarixam.pdf
    • http://tutir.linseyart.com/uploads/1/3/1/1/131164250/jugededoge_zufajanuwitazo_bugilugavukuv_benuxelimalepi.pdf
    • http://wivoj.norwoodcenter.org/uploads/1/3/0/8/130874488/1503028.pdf
    • http://rokunoku.mravinger.com/uploads/1/3/1/1/131163725/boguxudegi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/3194/3585/files/71999997601.pdf
    • https://cdn.shopify.com/s/files/1/0462/4708/4181/files/anakin_vs._obi-_wan_song.pdf
    • https://cdn.shopify.com/s/files/1/0432/5743/0176/files/kromosom_manusia_normal.pdf
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/ayushman_bima_yojana_card.pdf
    • https://cdn.shopify.com/s/files/1/0431/5552/1687/files/97503762183.pdf
    • https://cdn.shopify.com/s/files/1/0428/0441/2583/files/74805303048.pdf
    • https://cdn.shopify.com/s/files/1/0433/2129/5003/files/5288254072.pdf
    • https://cdn.shopify.com/s/files/1/0463/2933/1869/files/69318571309.pdf
    • https://cdn.shopify.com/s/files/1/0432/5759/4011/files/vepamuxudowesanukinojeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/4021/9037/files/vudidolupedumuxoradi.pdf
    • https://cdn.shopify.com/s/files/1/0429/0261/8278/files/minolta_x_700_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/9067/1771/files/causes_of_occupational_stress.pdf
    • https://cdn.shopify.com/s/files/1/0432/7617/3472/files/depubetivevarelutum.pdf
    • https://cdn.shopify.com/s/files/1/0438/7766/2875/files/kagejafuwezadupa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/84511803825.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_off00006574.bin
6391130cfa13fcc50dea343fd13af99703c87121221049086eb9cf4a515669c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6574 5596 bytes
font_01_sfnt_off00007864.bin
f1a577f12f23ddc052dc4c9dfd2747ed54d7795e0e5e7c4aa8b579577b15a198		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7864 11472 bytes

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