Malicious PDF — malware analysis report

Static analysis result for SHA-256 c62da37fc11d022e…

MALICIOUS

PDF

46.8 KB Created: 2020-08-18 14:24:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1a2af0cc8837303863c739569af19d7a SHA-1: 80294354cbf7aecfb47e02d97efb2dd0a8462811 SHA-256: c62da37fc11d022e8de645e6cc52cc147432152d0523e64d637c7fcc2973bc5a
140 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the string 'appshare apk pure' and a URL that appears to be part of a link farm designed to lure users. The presence of a callback lure heuristic further suggests a phishing or scam attempt. The primary malicious URL identified is https://ttraff.com/pify?keyword=appshare+apk+pure.

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.
  • 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
  • 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=appshare+apk+pure
    • http://gededif.majorguideservice.com/uploads/1/3/1/3/131384281/zubexap.pdf
    • http://files.stmarks-benson.com/uploads/1/3/1/6/131636866/7e15335.pdf
    • https://cdn.shopify.com/s/files/1/0438/3725/9938/files/lilesavojatetogepibiw.pdf
    • https://cdn.shopify.com/s/files/1/0440/4504/1814/files/63316869229.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2623/files/58109124671.pdf
    • https://cdn.shopify.com/s/files/1/0431/7518/2485/files/simile_metaphor_and_hyperbole_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0430/1671/6437/files/90317283252.pdf
    • https://cdn.shopify.com/s/files/1/0429/1801/9235/files/bajuwutefipijijenekulule.pdf
    • https://cdn.shopify.com/s/files/1/0440/2751/0934/files/44319285687.pdf
    • https://cdn.shopify.com/s/files/1/0429/9295/9642/files/romopo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9303/3111/files/lofegu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0944/1953/files/sugajep.pdf
    • https://cdn.shopify.com/s/files/1/0428/5654/6467/files/6477166024.pdf
    • https://cdn.shopify.com/s/files/1/0429/6183/0037/files/38999268926.pdf
    • https://cdn.shopify.com/s/files/1/0434/5298/9605/files/simasofufanativifa.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006113.bin
1bd8fbfabbee8301393f49761188b0f4cd44009cfb3d3e3fc681c453d339fb31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6113 4464 bytes
font_01_sfnt_off0000703a.bin
3e0505798237d9e040d1847fb3bdc4244473d873cf3d724a8b54247b671ae9d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x703A 10088 bytes
font_02_sfnt_off000092a7.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92A7 4324 bytes
font_03_sfnt_off0000a0a8.bin
05afd4c70e353830cf57f97c102a5782206dc50531dc3c733705d58cb296d3db		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0A8 3340 bytes

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