Malicious PDF — malware analysis report

Static analysis result for SHA-256 e521ff31f70a03f9…

MALICIOUS

PDF

60.1 KB Created: 2020-08-19 06:46:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 23ab34a94016cdcdc24d34072f6cb72c SHA-1: 6f4da534c2b7ff7ed003325334273cd7954e3b97 SHA-256: e521ff31f70a03f9cee387670cf869d7cbddc1e2adb7025d4009f802eae4acc1
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text fragments and URLs that suggest a lure, potentially related to 'best games for iphone 4s free'. The presence of a visual download button and a callback lure heuristic further supports a phishing or scam attempt. The primary malicious IOC is the redirector URL.

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.com/pify?keyword=best+games+for+iphone+4s+free
    • http://files.solconenergy.com/uploads/1/3/2/6/132683334/1618298.pdf
    • http://files.midwestnettingsolutions.com/uploads/1/3/2/7/132741211/1350483.pdf
    • http://files.melissahaneyart.com/uploads/1/3/1/4/131438211/5953721.pdf
    • http://files.globalisationandcities.com/uploads/1/3/1/6/131607174/jilaxafufusekiw.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/bijilogavuvip.pdf
    • https://cdn.shopify.com/s/files/1/0436/4887/6702/files/15390878436.pdf
    • https://cdn.shopify.com/s/files/1/0427/4742/9031/files/85323849460.pdf
    • https://cdn.shopify.com/s/files/1/0428/9508/1625/files/megigarosuxefikamurak.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/70736998420.pdf
    • https://cdn.shopify.com/s/files/1/0434/8005/5958/files/live_betting_strategies.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/368300468.pdf
    • https://cdn.shopify.com/s/files/1/0437/1090/6520/files/72988614146.pdf
    • https://cdn.shopify.com/s/files/1/0432/8862/5302/files/voxezamisopasiroluwogeb.pdf
    • https://cdn.shopify.com/s/files/1/0448/2118/4674/files/enlaces_interatomicos_e_intermoleculares.pdf
    • https://cdn.shopify.com/s/files/1/0431/0630/4166/files/82233364249.pdf
    • https://cdn.shopify.com/s/files/1/0433/9623/5415/files/rules_of_acquisition.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_off0000946b.bin
db216172449f862b8dde07a1ae4465b1380633be226bb972194f8bb86fc18425		 pdf-font-stream PDF embedded font (sfnt) at offset 0x946B 2972 bytes
font_01_sfnt_off00009eef.bin
c3c9d74a3bf7364ea6932bab5e36000bff1489e1ecbc7bf60b094621a8bf3eeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EEF 5420 bytes
font_02_sfnt_off0000b144.bin
21c60f4d8a4472d018fb4e93a3b1e2df7800a9ef6a7132ef26fedbcc1c9ba67f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB144 15592 bytes

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