Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a3fdb370e0dc515…

MALICIOUS

PDF

45.8 KB Created: 2020-08-09 16:32:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4561254d7e42cae2970128e33107ec19 SHA-1: 81bcfba57f3486b2669b8252306129e50cfc80bd SHA-256: 2a3fdb370e0dc515c1bc423d3e850643a267c070441e54b2228d086358e2fd71
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains hosting other PDFs, but one critical link redirects to a known malicious URL. The document body text and embedded links suggest a lure for software downloads, specifically mentioning 'Abbyy pdf transformer 12 free'. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a malicious site. 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.cc/pify?keyword=abbyy+pdf+transformer+12+free
    • http://files.aquanautsdiveadventures.com/uploads/1/3/0/7/130739456/xomoxaduwisobo_retepudi_favogis.pdf
    • http://files.recovery-counseling.com/uploads/1/3/1/4/131406211/ccad17a7b.pdf
    • http://files.hornsbyhistory.org/uploads/1/3/1/1/131164129/lolelegijezowul.pdf
    • https://cdn.shopify.com/s/files/1/0438/5813/3152/files/sakumikiranovef.pdf
    • https://cdn.shopify.com/s/files/1/0439/1701/7243/files/kurugufelolorululogixikod.pdf
    • https://cdn.shopify.com/s/files/1/0435/2560/3488/files/vabegadizamobabuduji.pdf
    • https://cdn.shopify.com/s/files/1/0438/4191/2997/files/41972673705.pdf
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/xiwizokubadinuraxifoju.pdf
    • https://cdn.shopify.com/s/files/1/0435/4909/8148/files/begepawisegeletim.pdf
    • https://cdn.shopify.com/s/files/1/0432/7217/5772/files/pedemonomijudunol.pdf
    • https://cdn.shopify.com/s/files/1/0441/2735/5032/files/descriptive_essay_format.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30698029692.pdf
    • https://cdn.shopify.com/s/files/1/0432/4160/3239/files/convert_to_word_free_zamzar.pdf
    • https://cdn.shopify.com/s/files/1/0432/2462/9411/files/fasonirabenogosoluvalef.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_off00006628.bin
23289b40a837912148a21de76bfe94572893c976a75931f9c4013cbff1e6ad30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6628 5568 bytes
font_01_sfnt_off0000790e.bin
4b553af0500ee561e0962effd92e9429578730342c6bef9ad125fd432846fe2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x790E 15224 bytes

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