Malicious PDF — malware analysis report

Static analysis result for SHA-256 e30660e9bfcc4a46…

MALICIOUS

PDF

50.1 KB Created: 2020-07-30 15:27:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82413600a61796c49d0b6b0ac0a08e37 SHA-1: 602138ee5c4795a622c20b88bddfcb50d844ead8 SHA-256: e30660e9bfcc4a46cfe72314a8824d46e16028f1f1b4a9cc65cb94651ce27afc
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is used in conjunction with a link farm strategy. The document body, though heavily obfuscated, contains text fragments suggesting it is a lure for 'Az 900 dumps free pdf'. The primary malicious IOC is the redirector URL, which likely leads to a phishing page or a malware download.

Heuristics 3

  • 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.
  • 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=az+900+dumps+free+pdf
    • http://files.designsbybrunner.com/uploads/1/3/1/6/131637240/xememikun.pdf
    • http://files.metaphysicsshop.com/uploads/1/3/1/3/131379443/4503187.pdf
    • http://files.menasgerovei.lt/uploads/1/3/1/8/131856771/jexexipawupap_walivev_duwukubikeluse_vubexogoxiziv.pdf
    • http://files.oywv.org/uploads/1/3/2/3/132303181/b45a5a07ae3.pdf
    • https://cdn.shopify.com/s/files/1/0432/6316/4580/files/nanefumox.pdf
    • https://cdn.shopify.com/s/files/1/0432/9819/3566/files/xarexaju.pdf
    • https://cdn.shopify.com/s/files/1/0436/5336/5910/files/90934475566.pdf
    • https://cdn.shopify.com/s/files/1/0435/8632/2593/files/dukowusogoro.pdf
    • https://cdn.shopify.com/s/files/1/0431/4241/4493/files/joxiwibekerita.pdf
    • https://cdn.shopify.com/s/files/1/0430/6498/3701/files/99594467002.pdf
    • https://cdn.shopify.com/s/files/1/0428/9606/4671/files/tujibepinukesaxazoniriz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3351/files/somuvufunaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/5496/4631/files/30964322983.pdf
    • https://cdn.shopify.com/s/files/1/0430/9506/4733/files/likezo.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_off00007c60.bin
e4b56ee70a2f40ea5e23c5241582bdd36e557176456db5b0b22ef960c65c6cba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C60 4820 bytes
font_01_sfnt_off00008cbb.bin
4327fa1747ca857c447d1710db1336a9b1264895e9c7c22077f4da2493aa5f94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CBB 14892 bytes

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