Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a48d81e7ca87420…

MALICIOUS

PDF

43.3 KB Authoring application: SWFTools
MD5: 95070dc2f683d2c44002d22b48a53816 SHA-1: a82e8ac56fa83ffabb38f45b603b4cec214b5e23 SHA-256: 1a48d81e7ca874208061afba2c6c5da1b449b0bc00e48fc7044912fbeb28fb04
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a common technique for SEO poisoning and phishing. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing intent. The document body, though heavily obfuscated, contains the primary malicious URL, which is also listed in the heuristics as a 'PDF_SEO_LINK_FARM'. This suggests the document is designed to redirect users to malicious content.

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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 http://uaspilotgroundschool.com/uploads/1/3/0/6/130621771/fubalaz-fediwarol.pdf
    • https://kugodigub.weebly.com/uploads/1/3/0/3/130323281/2379751.pdf
    • http://wugibidu.ring-lamp.ru/uploads/2020/01/28/262bf6da5f590c.pdf
    • http://rswanson.net/uploads/1/3/0/6/130605440/9845702.pdf
    • https://fatixebo.weebly.com/uploads/1/3/0/6/130604606/751dd7b6de6d3f.pdf
    • http://poku.kaz24.com/uploads/2020/01/28/8689735.pdf
    • http://tnlionslowvision.org/uploads/1/3/0/6/130620305/xojobixetu.pdf
    • http://kenna-kitchen.com/uploads/1/3/0/2/130273812/dogoselawig_timenuvup_pijoroxa_lokitasove.pdf
    • http://klarathecow.com/uploads/1/3/0/3/130313284/6cbb181.pdf
    • http://alinacruzfengshui.com/uploads/1/3/0/6/130604749/latuzobubunurizime.pdf
    • http://riverbendoutdoors.com/uploads/1/3/0/4/130489350/dulam-liserizipexor.pdf
    • http://livewellcounselingnh.com/uploads/1/3/0/4/130476347/130476347.html#child+medical+consent+form+printable

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012cd.bin
284a473d4775249a961cc470c9c013cab8f6c30e1a774d1c9aa1e2c6d0767659		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12CD 7596 bytes
font_01_sfnt_off00006322.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6322 16036 bytes

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