Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8ea9597e749a4e1…

MALICIOUS

PDF

51.8 KB Created: 2020-08-16 12:43:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79db68e0ef920259c459170de0a91829 SHA-1: 4fe38397c6d2ebbca7513d8eae243cc470d91135 SHA-256: b8ea9597e749a4e173521511658ff2960653f05fe161cafb16d00fd641f0386a
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/pify?keyword=narasimha+video+songs+free'. Another critical heuristic identified a PDF link farm, suggesting a tactic to artificially inflate search engine rankings or distribute malicious content. The document body, though heavily obfuscated, also contains the malicious URL, reinforcing the lure. No scripts were extracted, but the presence of multiple unknown URLs indicates a high likelihood of further malicious activity.

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=narasimha+video+songs+free
    • http://files.rollsroyceweddingcarsuk.com/uploads/1/3/2/6/132681586/selopegazituw.pdf
    • http://nasop.mwf-ec2019.com/uploads/1/3/0/7/130739220/nopokuludofumul.pdf
    • http://vuleg.plantsforhouston.com/uploads/1/3/1/3/131380429/477081.pdf
    • http://files.soundteaching.ca/uploads/1/3/0/7/130776573/781138eef9835de.pdf
    • http://files.benjamincarkeyreplacement.com/uploads/1/3/0/7/130775032/510d9d.pdf
    • https://cdn.shopify.com/s/files/1/0427/6640/1692/files/51861111141.pdf
    • https://cdn.shopify.com/s/files/1/0451/7157/2885/files/cylindrical_coordinates.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/68941146190.pdf
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/62514381681.pdf
    • https://cdn.shopify.com/s/files/1/0436/9465/3594/files/ragnarok_acolyte_level_up_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/3626/8949/files/kokaxin.pdf
    • https://cdn.shopify.com/s/files/1/0432/3452/5352/files/pikovax.pdf
    • https://cdn.shopify.com/s/files/1/0431/5706/1781/files/77598706917.pdf
    • https://cdn.shopify.com/s/files/1/0428/1214/5823/files/sixovexozimunaji.pdf
    • https://cdn.shopify.com/s/files/1/0431/7023/4527/files/83408790050.pdf
    • https://cdn.shopify.com/s/files/1/0429/8162/1919/files/jevepafekuzozujixa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0808/9499/files/77252278809.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2680/files/41566307753.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_off00008137.bin
8fd4739ec67eef6466863b4b3bbc63643e8ec48ef33c63151a8a92fd41f6086c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8137 5316 bytes
font_01_sfnt_off00009333.bin
7ee7a27598a74d86f0dbc6922b61164eea3ea43b074f356489ac85a6db1c0382		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9333 15016 bytes

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