Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbd4ae73fba57b4a…

MALICIOUS

PDF

44.1 KB Created: 2020-08-06 02:39:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe888ad73b0463ecf8b01bcd864f4c85 SHA-1: 3d59f12c8d1cb084bacc34b858c9ed9263fd52c4 SHA-256: fbd4ae73fba57b4ace93014ad83d3c3ada525da54bb6396d208343c91951f518
120 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a redirector URL, indicating a phishing or malicious content delivery attempt. The document body, though heavily obfuscated, contains text related to 'temperature conversion worksheet' and the malicious URL, suggesting a lure. The presence of numerous external links, many hosted on Shopify, further supports the link farm heuristic, which is often used to obscure malicious destinations.

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=temperature+conversion+worksheet+kelvin+celsius+fahrenheit+pdf
    • http://files.claireallegrataylor.com/uploads/1/3/1/4/131438120/ce1bced.pdf
    • http://files.lisaguice.net/uploads/1/3/1/3/131383837/ruzifuzeded_jububojirumifu.pdf
    • http://files.immortalpop.com/uploads/1/3/1/6/131636995/zodiret.pdf
    • http://files.katiemachain.com/uploads/1/3/1/4/131455283/57a787ca629.pdf
    • http://files.eatmooreproduce.com/uploads/1/3/1/8/131856160/da723b3.pdf
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/51146555624.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/guzexemago.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72518400380.pdf
    • https://cdn.shopify.com/s/files/1/0432/7686/1606/files/ps_ainda_te_amo_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0638/5573/files/xudufetazu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1750/2869/files/72620686488.pdf
    • https://cdn.shopify.com/s/files/1/0436/0355/8564/files/napawopikixoxezikixom.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/meragavafeduxilaxopuxaw.pdf
    • https://cdn.shopify.com/s/files/1/0427/7541/2902/files/84063750249.pdf
    • https://cdn.shopify.com/s/files/1/0431/8448/8607/files/heart_of_worship_guitar_chords.pdf
    • https://cdn.shopify.com/s/files/1/0434/8955/8680/files/tinifujaxaratesuzenav.pdf
    • https://cdn.shopify.com/s/files/1/0433/4891/8440/files/adobe_acrobat_reader_for_pc.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_off0000600e.bin
b9ad3c78a2053f7161437c87e1de9e69b2d00c74642ff7f3925892306c49bf8e
pdf-font-stream PDF embedded font (sfnt) at offset 0x600E 5444 bytes
font_01_sfnt_off0000726d.bin
9d5eb549ed09a93042c04b84566cb7aa31e83da9e5ebda54c8833694e677ac38
pdf-font-stream PDF embedded font (sfnt) at offset 0x726D 10052 bytes
font_02_sfnt_off000094c6.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x94C6 4324 bytes