Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa4a2ed1a99ce8d3…

MALICIOUS

PDF

59.9 KB Created: 2020-08-21 13:43:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51c9a257f2f7f2286075601c1bcff8e7 SHA-1: a07f11d5b9905d8f97d719db3dd4580860de30d4 SHA-256: fa4a2ed1a99ce8d31ecc077aed1b2ada0d0851ab711464ff441613b3917b6681
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting an attempt to manipulate search engine results or distribute content from various sources. The presence of the malicious redirector at 'https://ttraff.ru/pify?keyword=controlling+amyloid+fibril+formation+by+partial+stirring' is a primary indicator of malicious intent, likely leading to further malicious sites or downloads.

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=controlling+amyloid+fibril+formation+by+partial+stirring
    • http://magelol.scvcsd.org/uploads/1/3/1/6/131606349/lavewajibo-salefale.pdf
    • http://files.ravenbeak.com/uploads/1/3/0/8/130814296/4871602.pdf
    • http://files.sansmarket.co/uploads/1/3/0/9/130969377/288917.pdf
    • http://files.jmaisd.net/uploads/1/3/1/4/131455337/fixex.pdf
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/nisekoi_episode_1_english_dub_watchcartoononline.pdf
    • https://cdn.shopify.com/s/files/1/0439/7809/6798/files/define_ergonomics.pdf
    • https://cdn.shopify.com/s/files/1/0433/3689/2584/files/attendance_allowance_age_uk_factsheet.pdf
    • https://cdn.shopify.com/s/files/1/0460/2531/0367/files/film_the_hunting_ground_2015_sub_indo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5913/5132/files/8778179391.pdf
    • https://cdn.shopify.com/s/files/1/0441/0369/6536/files/timer_for_14_minutes.pdf
    • https://cdn.shopify.com/s/files/1/0447/1701/5194/files/fenabapudaziritir.pdf
    • https://cdn.shopify.com/s/files/1/0434/3152/6557/files/gevupuro.pdf
    • https://cdn.shopify.com/s/files/1/0430/7124/2391/files/sexedexakizabawa.pdf
    • https://cdn.shopify.com/s/files/1/0434/7166/7360/files/26811477398.pdf
    • https://cdn.shopify.com/s/files/1/0437/9649/6544/files/budesonida_spray_nasal_bula.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_off0000979e.bin
c794b082e33d07c306e1c496e6fbc3ad69c17bfa464b234a245866a7b4799608
pdf-font-stream PDF embedded font (sfnt) at offset 0x979E 5508 bytes
font_01_sfnt_off0000aa3f.bin
04b730712efd4e0581403eaaeba3566862f3fe11ce8bdb0a92d2156c0dc6b858
pdf-font-stream PDF embedded font (sfnt) at offset 0xAA3F 10124 bytes
font_02_sfnt_off0000cd20.bin
49436f94d5abf10ca6af8af9848174aab82dfe7bc58a5146411d238fd5c76648
pdf-font-stream PDF embedded font (sfnt) at offset 0xCD20 16148 bytes