Malicious PDF — malware analysis report

Static analysis result for SHA-256 a82b026fbc0c6178…

MALICIOUS

PDF

45.1 KB Created: 2020-08-07 09:10:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eb2cda1d85c83299eaa8d08ccebfe3bb SHA-1: f08ec63ac2cda7b8612d463c78883d58f4e4b671 SHA-256: a82b026fbc0c6178f6e7bbfadf00353eb37f3f090c188112eddbe37d49b211b3
182 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm used for SEO poisoning. One of the primary links, 'https://ttraff.cc/pify?keyword=apigee+tutorial+for+beginners+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the intent is to lure users to click on the malicious link under the guise of a tutorial. The heuristic 'SE_SECRET_RECOVERY_LURE' indicates a potential attempt to solicit sensitive information, further supporting a phishing or scam-related attack pattern.

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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.cc/pify?keyword=apigee+tutorial+for+beginners+pdf
    • http://files.desirapesta.us/uploads/1/3/1/3/131381612/tupulomokitid.pdf
    • http://files.gkamp.net/uploads/1/3/1/6/131636845/betezedetivale-wajegamejeputuk-kosodeposavakal.pdf
    • http://jubaguvez.southernutahwaterpolo.com/uploads/1/3/1/3/131384635/8949516.pdf
    • http://files.unparalleledtransformation.com/uploads/1/3/1/3/131383358/gukafamedimi.pdf
    • http://files.teakslockservice.com/uploads/1/3/1/3/131384660/taxibigodotewer.pdf
    • https://cdn.shopify.com/s/files/1/0438/4745/0789/files/wii_drums_set.pdf
    • https://cdn.shopify.com/s/files/1/0432/2862/7099/files/tules.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/mijeduwirarebajarabon.pdf
    • https://cdn.shopify.com/s/files/1/0433/5386/6408/files/vumimajuzu.pdf
    • https://cdn.shopify.com/s/files/1/0440/7368/1061/files/23356641425.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/6003/files/giferepigiluze.pdf
    • https://cdn.shopify.com/s/files/1/0436/5674/1022/files/playboy_mag_collection.pdf
    • https://cdn.shopify.com/s/files/1/0438/4414/1218/files/pan_africanism_in_south_africa.pdf
    • https://cdn.shopify.com/s/files/1/0430/3175/6957/files/94010742507.pdf
    • https://cdn.shopify.com/s/files/1/0450/6189/8390/files/skinner_behaviorism.pdf
    • https://cdn.shopify.com/s/files/1/0432/7519/0430/files/semavawig.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/72290952875.pdf
    • https://cdn.shopify.com/s/files/1/0434/4361/7959/files/mebuzukuxegupupop.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_off0000733d.bin
61bb979d4d6d8514623ed513314cdc6e8b538f15367084412cee7681d9e7badd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x733D 5336 bytes
font_01_sfnt_off0000856e.bin
1a9ce317b764cdc3a23375e439d1c4bb251fb17e32cd75ea926efa7099049455		 pdf-font-stream PDF embedded font (sfnt) at offset 0x856E 9968 bytes

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