Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e05f2568191e70d…

MALICIOUS

PDF

45.2 KB Created: 2020-08-07 00:01:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e55a95b7950deb2a1009438087e02439 SHA-1: 668b8b946c1d5e9970cd25bae8e1978ae8285b0b SHA-256: 3e05f2568191e70d9dfde599fc943d684963453b38dca74eca60aa4dd8ebfdcd
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is presented as a search result for 'ignition coil diagram pdf'. This suggests a phishing or scam attempt to direct users to malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the payload.

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=ignition+coil+diagram+pdf
    • http://files.pilateswithdarcie.com/uploads/1/3/0/7/130775678/guvevisimajevo-wupizavibi-kevukikiwo.pdf
    • http://files.armandwright.com/uploads/1/3/1/8/131856476/e0607.pdf
    • http://files.mrsclark14.com/uploads/1/3/1/1/131164556/9727944.pdf
    • https://cdn.shopify.com/s/files/1/0438/0593/3730/files/cermet_potentiometer.pdf
    • https://cdn.shopify.com/s/files/1/0432/2285/9943/files/94724960653.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/78594398433.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8428/files/fidesilowejifasuwo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2941/3544/files/95785651344.pdf
    • https://cdn.shopify.com/s/files/1/0430/2657/9610/files/8625496722.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/botezosural.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xifenawapuvesuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/viborovikumowenaben.pdf
    • https://cdn.shopify.com/s/files/1/0433/6995/5486/files/67222863004.pdf
    • https://cdn.shopify.com/s/files/1/0427/8019/7031/files/logalikabawopixuve.pdf
    • https://cdn.shopify.com/s/files/1/0430/3391/9645/files/sevewaxuximut.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_off00006700.bin
5f59c9d86a8b1336c3e4409b699ce3914afa99ad8cd98266f489776dfd90e688
pdf-font-stream PDF embedded font (sfnt) at offset 0x6700 4904 bytes
font_01_sfnt_off00007785.bin
2fc5880046067c9f2b1c25c88321831af7ccfbc2afeb6c394ca7792be1c12564
pdf-font-stream PDF embedded font (sfnt) at offset 0x7785 10076 bytes
font_02_sfnt_off000099f9.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x99F9 4324 bytes