Malicious PDF — malware analysis report

Static analysis result for SHA-256 8299ecd190134d40…

MALICIOUS

PDF

46.2 KB Created: 2020-08-17 17:47:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dcf6cba018e8c5c0bb6575b03dcce49c SHA-1: c1db334c3c45f288d1fa30dda5b9d89cccbe79ad SHA-256: 8299ecd190134d4086d569406061bd00d4e9a974e6d8550c09d840db05c334bd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination and potentially engage in SEO-based link farming. The document body, though heavily obfuscated, contains the same redirector URL and other URLs pointing to Shopify-hosted PDFs, suggesting a campaign to distribute malicious content. The ML classifier strongly indicated maliciousness, supporting the assessment of a phishing or redirection attack.

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/pify?keyword=bollywood+video+song++2018+tinyjuke
    • http://files.mypatternbreaker.com/uploads/1/3/1/4/131483266/misuwedixafug-sejamemuva-govilivinozeme-jifabojonekaxi.pdf
    • http://damiropo.tableandelights.com/uploads/1/3/1/4/131437119/xijefusedov-kivegabaforube-midusopobogoxo.pdf
    • http://files.witchdoctorpoet.com/uploads/1/3/1/8/131857024/gowupibapevova_muzorin_sujezenoxev_putuguleru.pdf
    • http://files.thechosinspain.org/uploads/1/3/0/8/130813876/sutixunapi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/9820/1502/files/36495726714.pdf
    • https://cdn.shopify.com/s/files/1/0430/7802/5370/files/zapudabawejosegivuneje.pdf
    • https://cdn.shopify.com/s/files/1/0433/8342/3128/files/6621127890.pdf
    • https://cdn.shopify.com/s/files/1/0432/5274/4347/files/21553529151.pdf
    • https://cdn.shopify.com/s/files/1/0436/4831/9638/files/11550392421.pdf
    • https://cdn.shopify.com/s/files/1/0428/0965/5462/files/charles_law_experiment_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sivezijikok.pdf
    • https://cdn.shopify.com/s/files/1/0429/4157/9420/files/28131244137.pdf
    • https://cdn.shopify.com/s/files/1/0433/5766/7487/files/tennessee_driver_s_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/0199/3622/files/negative_personality_adjectives_list.pdf
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/usb_disk_security.pdf
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/nicovideo_downloader_chrome.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_off000075bb.bin
e8ff50deb59a73cd9b9ac80832bde29b06dd6eca2ad0f03e046a2baf8432c84c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75BB 5648 bytes
font_01_sfnt_off00008942.bin
7272b4be3bf81d57dd8044e94909fadac45ba112dfa3d1238d6b1e8db43bd6a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8942 10096 bytes

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