Malicious PDF — malware analysis report

Static analysis result for SHA-256 f74613d6560ae864…

MALICIOUS

PDF

33.7 KB Created: 2020-08-20 01:51:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67c1373c64481fc807ac460ac4a726ee SHA-1: f63d4e884771ac410f7d2d67265a35f63b947759 SHA-256: f74613d6560ae864d8312b31ec1f434e73c3d9b230a02ac7fefe96f0830989c7
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, 'https://ttraff.ru/pify?keyword=alto+sax+sheet+music+amazing+grace', is flagged as a malicious redirector. This suggests the document's purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact lure.

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.ru/pify?keyword=alto+sax+sheet+music+amazing+grace
    • http://files.christysartspace.com/uploads/1/3/2/3/132303235/1057657.pdf
    • http://files.adhesivetreats.shop/uploads/1/3/2/6/132696263/e18b86e.pdf
    • http://nejan.yathuhospice.org/uploads/1/3/1/4/131407592/a10f87d229.pdf
    • http://xakonivim.buffjuice.com/uploads/1/3/1/8/131856318/77319.pdf
    • http://files.anacostiagrows.org/uploads/1/3/1/1/131164081/5873327.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5800/files/guwunag.pdf
    • https://cdn.shopify.com/s/files/1/0434/2090/9725/files/air_waybill_definition.pdf
    • https://cdn.shopify.com/s/files/1/0427/9749/8535/files/desurefipiburibosuwilulo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0715/6128/files/68326833284.pdf
    • https://cdn.shopify.com/s/files/1/0427/7665/8087/files/exam_fm_sample_questions.pdf
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/pomegoxabinifugowofitume.pdf
    • https://cdn.shopify.com/s/files/1/0431/5506/2948/files/pepemutakejovate.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/folopugikuxu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1614/2497/files/the_yalta_conference_february_1945_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/zimumanabaxomu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1977/9741/files/download_idm_full_crack.pdf
    • https://cdn.shopify.com/s/files/1/0431/0525/5586/files/campione_light_novel.pdf
    • https://cdn.shopify.com/s/files/1/0433/2997/8526/files/puwanox.pdf
    • https://cdn.shopify.com/s/files/1/0436/0149/4179/files/introscope_workstation_guide.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_off0000466c.bin
ce63c7e0b50052ba32ffc7532653c8f92f089e38d50a9b12c68a8babe4237dc1
pdf-font-stream PDF embedded font (sfnt) at offset 0x466C 5320 bytes
font_01_sfnt_off00005865.bin
b14b1dce11567973315cc4dfc5de0c579736ff841e356518f6cd8322169cb70c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5865 9768 bytes