Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5b4c5b5b128ad8c…

MALICIOUS

PDF

41.5 KB Created: 2020-08-11 00:12:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 893636a0bc3bad637a7e8431c016820b SHA-1: 2095c232c5b2d271768d7d77ff425759daa54d72 SHA-256: a5b4c5b5b128ad8cb3b4be690efe539a8f1068e78feab32fce7321f9ffdd0267
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body text, though partially corrupted, includes the URL 'https://ttraff.com/pify?keyword=basic+concepts+of+business+economics+pdf', which is a known malicious redirector. This suggests the document's primary purpose is to redirect users to malicious sites, likely for phishing or malware distribution. No scripts were extracted from this sample.

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=basic+concepts+of+business+economics+pdf
    • http://files.mtzpbc.org/uploads/1/3/0/9/130969370/bamoduf_jobuseliw_nixadif_suseru.pdf
    • http://files.madelineglennthomas.com/uploads/1/3/1/8/131872079/woxiwawedovuxemikij.pdf
    • http://files.scireinke.com/uploads/1/3/0/9/130968933/guwidagubarafafa.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/jafopegap.pdf
    • https://cdn.shopify.com/s/files/1/0435/1708/3802/files/addison_wesley_math_makes_sense_grade_4.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zudofujavulasosajawigubi.pdf
    • https://cdn.shopify.com/s/files/1/0451/7065/5381/files/skf_bearing_number_identification.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/2997/files/2174502120.pdf
    • https://cdn.shopify.com/s/files/1/0434/6370/4729/files/88139706043.pdf
    • https://cdn.shopify.com/s/files/1/0434/3054/3512/files/76164194296.pdf
    • https://cdn.shopify.com/s/files/1/0433/4642/8072/files/snake_game_google.pdf
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/lidas.pdf
    • https://cdn.shopify.com/s/files/1/0433/1523/2923/files/alkaline_water_benefits.pdf
    • https://cdn.shopify.com/s/files/1/0438/9791/3512/files/rikadurevatoxusade.pdf
    • https://cdn.shopify.com/s/files/1/0438/2490/6397/files/zepokiwesarudijodimebode.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/8321013720.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_off0000649d.bin
9211d6852ebabad5ee447f331089e87a6f79956af1f1536fedebed192973c4cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x649D 5364 bytes
font_01_sfnt_off000076b5.bin
e4fc03d684582bfdbb00f2c47c461f55cfd86e45ac676980e9c53e69df2ababc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76B5 10052 bytes

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