Malicious PDF — malware analysis report

Static analysis result for SHA-256 abbd992541de43cd…

MALICIOUS

PDF

41.1 KB Created: 2020-08-21 12:42:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5cae598aecdf99ed985b83131ccc3137 SHA-1: 307d2d94707b2706dd7548da2504cd05a34594ba SHA-256: abbd992541de43cdcc14039d73d5e97fb4b87df55e956bfc61aeaeddebf5c6d9
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded links suggest a lure related to a 'blemish remover app android', likely to trick users into clicking the malicious URL. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many hosted on cdn.shopify.com, which is a common tactic for SEO poisoning to drive traffic to malicious sites.

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=blemish+remover+app+android
    • http://files.wildmillers.com/uploads/1/3/1/3/131381681/1552240.pdf
    • https://cdn.shopify.com/s/files/1/0428/8924/8924/files/zerop.pdf
    • https://cdn.shopify.com/s/files/1/0439/1557/5464/files/almacenamiento_de_datos_en_la_nube.pdf
    • https://cdn.shopify.com/s/files/1/0435/5650/3707/files/venetiliwupokozimivixipek.pdf
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/lurotewitulifalareru.pdf
    • https://cdn.shopify.com/s/files/1/0440/8272/5029/files/75567510507.pdf
    • https://cdn.shopify.com/s/files/1/0428/2315/5878/files/apc_smart_ups_c_1000va.pdf
    • https://cdn.shopify.com/s/files/1/0430/2720/2205/files/wotogexi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3831/7464/files/78211188180.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/30165325312.pdf
    • https://cdn.shopify.com/s/files/1/0437/2434/1400/files/harmony_hall_piano_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/9567/8357/files/68222003308.pdf
    • https://cdn.shopify.com/s/files/1/0431/2544/0669/files/anemia_hemolitik_mikroangiopati.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_off000063ce.bin
c7cdd8c26478b1c7be82023fe29e30e19f5e8d2a26fd08d1bb2c9983d7f67111		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63CE 5308 bytes
font_01_sfnt_off000075b6.bin
e05d014d9581d44d627a8fd7ced13265d4a789ce448cc27ae3096ee28ebb52a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75B6 10068 bytes

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