Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2b4538d909f164c…

MALICIOUS

PDF

61.1 KB Created: 2020-08-14 19:31:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c9d206dec2ac0edb7cdeb63042883089 SHA-1: 6cdbd6b95dc514ff28f4c0f08dc40e6cca04039b SHA-256: d2b4538d909f164caafe6d944dcd88892c8fc2de23702095a9a76916677596aa
152 Risk Score

Malware Insights

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

The PDF document was flagged as malicious by a machine learning classifier and contains a significant number of embedded links. One of these links, https://ttraff.cc/pify?keyword=broadsheet+definition+art, points to a known malicious redirector. The document appears to be a link farm, likely intended to distribute malware or conduct phishing attacks by directing users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=broadsheet+definition+art
    • http://files.inspiredinksbymadeline.com/uploads/1/3/0/8/130813988/vonigijerugare_lazalam_jafusap_popaxuvisaxi.pdf
    • http://xewijon.societeaus.com/uploads/1/3/0/7/130774993/023c2.pdf
    • https://cdn.shopify.com/s/files/1/0430/7497/7945/files/accordi_canzoni_del_momento.pdf
    • https://cdn.shopify.com/s/files/1/0436/0237/8915/files/zotapiwipupuveno.pdf
    • https://cdn.shopify.com/s/files/1/0434/6927/5286/files/aws_ec2_documentation.pdf
    • https://cdn.shopify.com/s/files/1/0436/5798/6201/files/wowuzamijurepoduvuwe.pdf
    • https://cdn.shopify.com/s/files/1/0434/9689/8724/files/jazekijipedejodutezuvizib.pdf
    • https://cdn.shopify.com/s/files/1/0429/9338/5633/files/662047155.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/8685957786.pdf
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/natigobomuzebajun.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vuxopikuxoxixu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5624/2589/files/bedugadikokikerilogejipim.pdf
    • https://cdn.shopify.com/s/files/1/0433/7808/1955/files/spotify_can_t_play_the_current_song.pdf
    • https://cdn.shopify.com/s/files/1/0433/7637/8014/files/gekijiligaxagi.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000804d.bin
f3f3243e0972ead8147e131d6e49d65dbad2f7622ae8240948c9ceee00250e69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x804D 7072 bytes
font_01_sfnt_off00009852.bin
66d736d42954a8c7dcf25268ae50d4dc87986f5a847bfe44987412ad0e735f20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9852 5012 bytes
font_02_sfnt_off0000a94f.bin
d82230dd77bc36824a1fc6d04c57439bb46a14ef51a59a2ded431495df49696f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA94F 6968 bytes
font_03_sfnt_off0000bbf3.bin
8e596561a9ed2c1e52569ef26b033ea54f70b2b82d369e316a2f4ef668daafae		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBF3 13532 bytes

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