Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c727a3ea3412674…

MALICIOUS

PDF

45.6 KB Created: 2020-08-10 05:24:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 528152d21a027a1cf0e45d5d159145df SHA-1: 838e26030192cb8170e0f2917a16e262bd4593d9 SHA-256: 7c727a3ea341267495b14ff4896f855a0b044bf69e28423cf285b7c62cb2d1cc
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are hosted on Shopify and appear to be SEO-optimized for book-related searches. One prominent link, 'https://ttraff.cc/pify?keyword=telugu+academy+books+for+intermediate+1st+year+botany+pdf', is flagged as malicious. This suggests a phishing or redirection attack where the document's content is a lure to encourage clicks on malicious URLs. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=telugu+academy+books+for+intermediate+1st+year+botany+pdf
    • http://files.designerin-sucht-technikjob.de/uploads/1/3/0/7/130776298/6463434.pdf
    • http://files.crystalprokc.com/uploads/1/3/1/3/131379680/luzivobokobolozevo.pdf
    • http://files.emilykund.com/uploads/1/3/2/6/132682790/03ab11689.pdf
    • https://cdn.shopify.com/s/files/1/0431/2960/2205/files/supidumofolijeg.pdf
    • https://cdn.shopify.com/s/files/1/0434/2707/0104/files/vadibotosevu.pdf
    • https://cdn.shopify.com/s/files/1/0448/2508/4065/files/convert_to_word_document_adobe.pdf
    • https://cdn.shopify.com/s/files/1/0433/4629/6982/files/japogexadivafitojupofugo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9912/7959/files/edital_prf_verticalizado.pdf
    • https://cdn.shopify.com/s/files/1/0434/6875/0998/files/bodikavebasolaxi.pdf
    • https://cdn.shopify.com/s/files/1/0440/3894/6981/files/dowozatom.pdf
    • https://cdn.shopify.com/s/files/1/0429/8869/9802/files/ansys_workbench_practice_problems.pdf
    • https://cdn.shopify.com/s/files/1/0433/4924/6110/files/my_ambition_in_life_essay_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0436/6503/1321/files/volkswagen_beetle_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/0067/5995/files/17035494834.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_off00005fa5.bin
c358a1de9824d5b58add879b08e43fdd4d856760a320eb82943c9114f00a3b42
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA5 5784 bytes
font_01_sfnt_off0000734e.bin
48d5469057bba75dff60f2968174636f9faf923dbefdf624440b77461c452fcb
pdf-font-stream PDF embedded font (sfnt) at offset 0x734E 5408 bytes
font_02_sfnt_off00008678.bin
73888ce616847736a733c8119c35554926c6111c43962fc288bd438d1cdc0f85
pdf-font-stream PDF embedded font (sfnt) at offset 0x8678 9968 bytes