Malicious PDF — malware analysis report

Static analysis result for SHA-256 d22de305c86c3ec1…

MALICIOUS

PDF

41.7 KB Created: 2020-08-19 22:39:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e21d8a30b6fb4134ec73a134f7ffed1d SHA-1: fb276d04f06abe17ec188a9b9f9534988863c8cc SHA-256: d22de305c86c3ec1a6a1ccc8b76c040262c959b011cd23e3b7fe96cfd9b89735
154 Risk Score

Malware Insights

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

The PDF document contains a lure related to "AMD drivers auto detect" and embeds a malicious redirector link pointing to ttraff.com. This link is designed to lead users to further malicious content. The document also functions as a link farm, distributing numerous links to PDFs hosted on Shopify and other domains, likely for SEO poisoning or to spread further malicious content. No scripts were extracted, but the presence of malicious redirector links and the SEO link farm strongly indicate a phishing or malware distribution campaign.

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=amd+drivers+auto+detect
    • http://fubek.rosecitypepperheads.com/uploads/1/3/1/4/131438541/7331069.pdf
    • http://juruz.kathleenmckennahewtson.com/uploads/1/3/0/8/130814017/joputolikob.pdf
    • http://files.northernboatwholesalers.net/uploads/1/3/1/4/131483305/datudatarafawurud.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7905/files/43576481766.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7352/files/vujog.pdf
    • https://cdn.shopify.com/s/files/1/0431/5624/2581/files/79302394664.pdf
    • https://cdn.shopify.com/s/files/1/0435/4048/0164/files/segurelatosewosulu.pdf
    • https://cdn.shopify.com/s/files/1/0435/0751/5558/files/dikawebo.pdf
    • https://cdn.shopify.com/s/files/1/0437/9351/4645/files/star_wars_battlefront_2_pc_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5877/files/66028212440.pdf
    • https://cdn.shopify.com/s/files/1/0430/7746/8327/files/19113514564.pdf
    • https://cdn.shopify.com/s/files/1/0435/8832/1443/files/nedunirabamuxikiwulatefob.pdf
    • https://cdn.shopify.com/s/files/1/0432/4212/7527/files/bikuwubidakep.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_off00005d06.bin
6174a9c237bd3e0f9c8ce2464514e4bc70b12aba5f89fa6296b7edce95be02b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D06 5100 bytes
font_01_sfnt_off00006e46.bin
b0a356d4e145c2e5f27afee90568b24e842693d4d922b5d6026716f1275131c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E46 14164 bytes