Malicious PDF — malware analysis report

Static analysis result for SHA-256 a34c15e11cc7cc03…

MALICIOUS

PDF

70.9 KB Created: 2020-08-30 14:48:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77294f31e38dec5d430608199f521687 SHA-1: 328b2dfc1b4dc474d62c0afd6126fd17efbf6fd7 SHA-256: a34c15e11cc7cc03fdf12d0d642cc1b003a34211fe6e4ee73468664954a9ae46
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious infrastructure. The document body, though heavily obfuscated, contains text related to a 'Dell precision m4600 laptop' and a URL that appears to be part of a link farm designed to attract search engine traffic. This suggests a phishing or scam attempt using a lure related to a product. The primary IOC is the malicious redirector URL.

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/wix?keyword=dell+precision+m4600+laptop
    • https://cdn.shopify.com/s/files/1/0429/9702/2879/files/21831842860.pdf
    • https://cdn.shopify.com/s/files/1/0436/9838/9145/files/new_vitality_ageless_male_performance_tablets.pdf
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/xikixiwolonulopakeniferet.pdf
    • https://cdn.shopify.com/s/files/1/0462/5720/9495/files/body_worksheet_esl.pdf
    • https://cdn.shopify.com/s/files/1/0428/2292/6492/files/wordly_wise_3000_book_5_lesson_20.pdf
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/tapezadojijasulijun.pdf
    • https://cdn.shopify.com/s/files/1/0431/5290/0250/files/jorex.pdf
    • https://cdn.shopify.com/s/files/1/0433/5150/7094/files/9765889356.pdf
    • https://cdn.shopify.com/s/files/1/0439/1642/7419/files/jedikuzujejifokadupibi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8108/0725/files/90574783975.pdf
    • https://cdn.shopify.com/s/files/1/0432/5235/1144/files/63982695792.pdf
    • https://cdn.shopify.com/s/files/1/0446/1517/2259/files/nuledulabegi.pdf
    • https://cdn.shopify.com/s/files/1/0428/4783/0183/files/wivebokesijasolokolefedi.pdf
    • https://cdn.shopify.com/s/files/1/0447/8861/3281/files/39744049344.pdf
    • https://cdn.shopify.com/s/files/1/0431/4827/9970/files/veliw.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c024.bin
a62829dbfcee86659973dc8902c20b717814838166c10f8d48a35df065db4419		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC024 5252 bytes
font_01_sfnt_off0000d1dc.bin
fa91d3e959153c29b281dfae742dcaf734f0f532530e6269706d6b951a91a94f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD1DC 15472 bytes
font_02_sfnt_off00010058.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10058 4324 bytes

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