Malicious PDF — malware analysis report

Static analysis result for SHA-256 99b848bcd2a91f7c…

MALICIOUS

PDF

43.2 KB Created: 2020-08-15 08:38:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 542ca1533ad3b404a46adb9b467f1df4 SHA-1: 66b5ec2a909c9527e96f19b1458fed9863b58708 SHA-256: 99b848bcd2a91f7c028f70cc351a6da62a0164e6c1e042b5342d1a9642f262a4
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to `ttraff.com`. The document body, though heavily obfuscated, contains a URL that appears to be the same as the malicious redirector. This suggests the document's primary purpose is to trick the user into clicking the link, likely leading to a phishing or malware download site.

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=easy+spreadsheet+for+personal+budget
    • http://files.whitepeacockcoffee.com/uploads/1/3/1/4/131436971/7dad80.pdf
    • http://files.neonopen.org/uploads/1/3/0/7/130738755/konuderabano.pdf
    • http://files.lyzasahertian.com/uploads/1/3/1/4/131452799/risegesepedutugorowe.pdf
    • http://files.beefalonorthwest.com/uploads/1/3/1/8/131871433/tukijunutus.pdf
    • http://pefuban.freehillblades.com/uploads/1/3/0/8/130814124/1413973.pdf
    • https://cdn.shopify.com/s/files/1/0433/8892/8150/files/12871807479.pdf
    • https://cdn.shopify.com/s/files/1/0433/6674/4216/files/64661098813.pdf
    • https://cdn.shopify.com/s/files/1/0427/9356/6364/files/mo_creatures_manticore.pdf
    • https://cdn.shopify.com/s/files/1/0431/1672/4386/files/wulut.pdf
    • https://cdn.shopify.com/s/files/1/0432/6742/4416/files/tivenusakikowerupirojipu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5654/5433/files/8143359157.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/98185001800.pdf
    • https://cdn.shopify.com/s/files/1/0438/7989/1099/files/puribes.pdf
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/pademokabolutulabonik.pdf
    • https://cdn.shopify.com/s/files/1/0437/8086/6197/files/47442010444.pdf
    • https://cdn.shopify.com/s/files/1/0435/3861/2378/files/54973762476.pdf
    • https://cdn.shopify.com/s/files/1/0433/7090/5756/files/principles_of_how_to_win_friends.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_off00006a7b.bin
732c146a26800f83120d886669275526041d9b63165f2775f10323419986bea7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7B 5500 bytes
font_01_sfnt_off00007d2e.bin
1e0462097146fa07b3b55da7e2f8e6ee51b2fa00d986630d857f0db94e5b1682		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2E 9980 bytes

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