Malicious PDF — malware analysis report

Static analysis result for SHA-256 937137c7e2370d04…

MALICIOUS

PDF

41.7 KB Created: 2020-08-01 16:07:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f56499ac60c14a3985cd39821756513f SHA-1: aa072de5ffca4fc9f51cab6aa61357a143b59d9b SHA-256: 937137c7e2370d0406e9d45a5745ac2ef353731720a78fbd71546fc7b0dcd0e2
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including a critical redirector link to 'ttraff.ru' which is associated with a lure for 'roblox script executor download'. It also exhibits characteristics of a PDF link farm, with numerous links pointing to external PDFs, likely for SEO poisoning or traffic generation. The presence of a download button lure further supports the malicious intent of directing users to potentially harmful content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=roblox+script+executor+download
    • http://files.4thchakra.com/uploads/1/3/0/7/130740018/d72bc.pdf
    • http://files.mhdtechcorp.com/uploads/1/3/1/4/131483955/bujixowijavol_roxejirevad.pdf
    • http://files.futureleaforganics.com/uploads/1/3/2/6/132681201/554145abb2a4.pdf
    • http://files.connoisseurstours.com/uploads/1/3/1/8/131857071/abaa266e7dc9a.pdf
    • https://cdn.shopify.com/s/files/1/0433/3184/6296/files/wuzokesuboromigegu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3623/7206/files/galijubu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3575/3639/files/noxiwevel.pdf
    • https://cdn.shopify.com/s/files/1/0433/8784/6806/files/61648984251.pdf
    • https://cdn.shopify.com/s/files/1/0437/5658/5111/files/56095822718.pdf
    • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/lasidufekurazemopaze.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0135/files/fezogimomijetiw.pdf
    • https://cdn.shopify.com/s/files/1/0431/1144/8729/files/pugifigegoperoza.pdf
    • https://cdn.shopify.com/s/files/1/0430/4902/5690/files/20770473688.pdf
    • https://cdn.shopify.com/s/files/1/0430/4492/9690/files/56579150258.pdf
    • https://cdn.shopify.com/s/files/1/0437/3820/2273/files/dofidakibowerajuru.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_off00005aaa.bin
db0927a97b6647f33e62073cbf26bac31238499ac41b97cacbbe109d1161fa76
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AAA 5376 bytes
font_01_sfnt_off00006d16.bin
d207263c9733aef9be8b064d424fbdb1d3e3f1bd530779c0fce15ab1ca468c22
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D16 10992 bytes
font_02_sfnt_off00009223.bin
e51ca0148e7e0aae4eb42a5f75a65a08a0f66e9857e45ec5485c6aa46bc5905c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9223 1740 bytes