Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f305833b6b23bff…

MALICIOUS

PDF

41.7 KB Created: 2020-08-05 02:49:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 864a66e87fb65e6b92ac9e99894e1bdc SHA-1: fa958fa101a7283e9f3f14538805cbb387b9467b SHA-256: 8f305833b6b23bffe63e6b4d5feeffe74431ad408824b5fe3755d44b6bd1101a
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to a 'habit burger grill menu pdf' and includes the malicious URL. This suggests a phishing or malware distribution attempt where the user is tricked into clicking the link under the guise of viewing a menu. No scripts were extracted, limiting the analysis of the payload.

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.cc/pify?keyword=habit+burger+grill+menu+pdf
    • http://files.lindberghforte.org/uploads/1/3/2/6/132682230/9d2e0e8f7dddb9.pdf
    • http://files.flipsidetoo.com/uploads/1/3/0/7/130776499/dixumuti_rinoma_woxilufu_fetulugi.pdf
    • http://files.capriliciousjewellery.com/uploads/1/3/0/7/130739490/1809953.pdf
    • http://files.nyacklibrary.org/uploads/1/3/1/0/131070688/mexefisidi.pdf
    • https://cdn.shopify.com/s/files/1/0441/3823/4008/files/12379664864.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/mabanelanorebunugofelaku.pdf
    • https://cdn.shopify.com/s/files/1/0437/6163/1389/files/silupuxosolukafevodu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8283/3308/files/70166616644.pdf
    • https://cdn.shopify.com/s/files/1/0438/7930/1275/files/zowufipokuwafaduporuvezi.pdf
    • https://cdn.shopify.com/s/files/1/0434/8618/3576/files/how_to_make_a_game_in_html.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98629167596.pdf
    • https://cdn.shopify.com/s/files/1/0438/7491/0376/files/97890662856.pdf
    • https://cdn.shopify.com/s/files/1/0433/2073/7950/files/nufalipaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/5725/0455/files/98220287007.pdf
    • https://cdn.shopify.com/s/files/1/0431/5480/0796/files/59562342520.pdf
    • https://cdn.shopify.com/s/files/1/0437/6533/4165/files/pajivizitonewazarisumejim.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/4554452302.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_off000065c5.bin
b2f8c34d6889dae4b5c891f9e750ffe1cd3d8cb9df504ec02d4578a5450c25d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65C5 5284 bytes
font_01_sfnt_off000077a3.bin
0846dc059675101c8049473f656f5a0e95f25e098e21e5784ba8473b3f350e03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77A3 10028 bytes

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