Malicious PDF — malware analysis report

Static analysis result for SHA-256 8abece53c2d2a93e…

MALICIOUS

PDF

56.0 KB Created: 2020-07-20 12:46:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c867ad1fc8d2d69adb1293601727b384 SHA-1: c2a8f5e548083cef71e2d7368a583f58260fddbc SHA-256: 8abece53c2d2a93eee0037a37de6e77a1fd42661c9d19cd2e2f6a94e0a631658
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'ttraff.com'. Another critical heuristic indicates a PDF link farm, with many links pointing to Shopify-hosted PDFs, suggesting an attempt to manipulate search engine results or distribute malicious content. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be directing users to malicious external sites.

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.com/wb?keyword=hydraulic%20power%20pack%20circuit%20diagram%20pdf
    • http://files.furtherreaches.net/uploads/1/3/0/8/130813931/posebagawifamuliwuwa.pdf
    • http://files.arkoghosh.com/uploads/1/3/1/4/131407194/turupejaromu.pdf
    • http://files.greenheronbookarts.com/uploads/1/3/1/3/131379134/viroditewe-bekejofisos-didavunipef.pdf
    • http://files.greenheronbookarts.com/uploads/1/3/
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lejozusuxawunulimedobina.pdf
    • https://cdn.shopify.com/s/files/1/0429/2483/4975/files/rukiviga.pdf
    • https://cdn.shopify.com/s/files/1/0433/0484/5465/files/94861591937.pdf
    • https://cdn.shopify.com/s/files/1/0427/7462/6470/files/lonubawejaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/9610/5375/files/54164538494.pdf
    • https://libujidi.files.wordpress.com/2020/06/pabufujopufuji.pdf
    • https://dametox.files.wordpress.com/2020/06/20293722560.pdf
    • https://rasopaba.files.wordpress.com/2020/06/ganapiri.pdf
    • https://rasozufim.files.wordpress.com/2020/07/89114303566.pdf
    • https://pagapot.files.wordpress.com/2020/06/ziwumaxeginomuvufira.pdf
    • https://cdn.shopify.com/s/files/1/0437/6576/0151/files/65257413855.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76588695657.pdf
    • https://cdn.shopify.com/s/files/1/0435/6987/3054/files/46505600499.pdf
    • https://cdn.shopify.com/s/files/1/0441/0081/2952/files/93135866890.pdf
    • https://cdn.shopify.com/s/files/1/0433/6343/4654/files/tarumeretijibineradag.pdf
    • https://cdn.shopify.com/s/files/1/0433/8909/1998/files/96421261297.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/masalujozagi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6646/6216/files/4609342435.pdf
    • https://cdn.shopify.com/s/files/1/0435/1649/3976/files/busugalirifizowipu.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_off00009d33.bin
2e25448ae5d146d940521888e10228fb7dd1f15a6e34bda5f447bc8810f0b060		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D33 5292 bytes
font_01_sfnt_off0000af53.bin
6142ef69d6716fe6260b6403edd8cf175a8d6f766a756c62d35cddb5c9488608		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF53 10116 bytes

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