Malicious PDF — malware analysis report

Static analysis result for SHA-256 39a004b0d63bda8b…

MALICIOUS

PDF

65.3 KB Created: 2020-08-02 21:21:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 503f3fb81467bd75444be84a7bd87196 SHA-1: b5437f17a9f95636a17ffb381276ebd28557ec46 SHA-256: 39a004b0d63bda8b8e53afbd7bf4b4df3d348517afe5093b3561eef65cc1d37a
160 Risk Score

Malware Insights

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

The PDF contains a lure related to 'Becker CPA Review' and embeds numerous links, including a critical redirector link to 'ttraff.cc'. This indicates an attempt to trick the user into visiting malicious infrastructure, likely for phishing or malware distribution. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' further supports this, suggesting a scam involving fake prizes or deliveries. No scripts were extracted, but the PDF structure and embedded URLs are sufficient to infer a malicious intent.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=becker+cpa+review
    • http://files.labradorpuppyforsale.com/uploads/1/3/0/8/130813132/simitepikuta.pdf
    • http://files.cramerclass.com/uploads/1/3/0/7/130739128/fosasebizowumila.pdf
    • http://files.tristaricelandics.com/uploads/1/3/0/8/130813416/675674.pdf
    • http://files.globetrotterscience.com/uploads/1/3/0/8/130874284/90f1224905a8b.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/95126128964.pdf
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/26383447814.pdf
    • https://cdn.shopify.com/s/files/1/0428/4396/3548/files/71343066882.pdf
    • https://cdn.shopify.com/s/files/1/0435/3772/7637/files/gejigolowogegokurisibon.pdf
    • https://cdn.shopify.com/s/files/1/0431/7016/8986/files/bilebipirulem.pdf
    • https://cdn.shopify.com/s/files/1/0432/4877/9426/files/alvin_and_the_chipmunks_the_squeakquel_123movies.pdf
    • https://cdn.shopify.com/s/files/1/0434/1697/7559/files/jujajaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/2181/1364/files/sulalikuwirip.pdf
    • https://cdn.shopify.com/s/files/1/0438/2146/5757/files/68327857729.pdf
    • https://cdn.shopify.com/s/files/1/0429/1896/9507/files/3498180552.pdf
    • https://cdn.shopify.com/s/files/1/0434/2477/6354/files/50568127902.pdf
    • https://cdn.shopify.com/s/files/1/0431/0722/1661/files/avast_pro_antivirus_license_file.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000085db.bin
0b1dc5b4f573a69b9afaf6921dac0d317c9c89d55a369f9988057ef6dc1e612c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85DB 6548 bytes
font_01_sfnt_off00009630.bin
fa47fd24bc6bd93daa449fcc384b7d60fc86d100c5467622338bb822cdc92b4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9630 4476 bytes
font_02_sfnt_off0000a573.bin
b7d88799324b00ec566b7e3c430f802d07920be87832eec88d398d13b793f2ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA573 1756 bytes
font_03_sfnt_off0000ae2d.bin
8d082082c9a34085d9679db2a068f5a2b91bacdfd5cffe21e37e743baceada6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE2D 10608 bytes
font_04_sfnt_off0000d2b9.bin
3818ad609ee50c1d94dbc61f5d10731946e88c926c1c3751f72a6abad526de54		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B9 16096 bytes
font_05_sfnt_off0000e78d.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE78D 4324 bytes

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