Malicious PDF — malware analysis report

Static analysis result for SHA-256 60387bbe986ff588…

MALICIOUS

PDF

47.4 KB Created: 2020-08-09 10:12:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 290687a3352ebd88e9b7094545292dcc SHA-1: c8736389d754040e8f143e028e849395e8ac11d5 SHA-256: 60387bbe986ff5888fdd67788ccd667ebbcf866f85e6d97e03a5590f926e261e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one pointing to a known malicious redirector at `https://ttraff.ru/pify?keyword=bilbo+s+last+song+pdf`. This suggests the document is designed to trick users into visiting malicious infrastructure, likely to download further malware. The ML classifier strongly supports the malicious nature of this PDF.

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.ru/pify?keyword=bilbo+s+last+song+pdf
    • http://files.kmgartistry.com/uploads/1/3/1/0/131070202/falaxokef.pdf
    • http://files.threeforksambulance.com/uploads/1/3/0/8/130814232/rogakututoziwipeg.pdf
    • http://files.evolvemassagewellness.com/uploads/1/3/1/1/131163723/laxud.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/0512/4503/files/visejetoxekadipanejuvutep.pdf
    • https://cdn.shopify.com/s/files/1/0437/2037/6474/files/20703175920.pdf
    • https://cdn.shopify.com/s/files/1/0434/1720/6946/files/zejifasikoxuwisigezodu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3356/files/79105343072.pdf
    • https://cdn.shopify.com/s/files/1/0437/2119/5669/files/fomotolobakutijusedo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/rusolerun.pdf
    • https://cdn.shopify.com/s/files/1/0430/9775/1709/files/ocarina_of_time_master_quest_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/sivonolitoporivi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3051/9716/files/titiwiniwe.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/29588220708.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d05.bin
bd8e5288db9cc3ee209e440a839f77088f057091b3b284201b8911708d4b2244
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D05 5304 bytes
font_01_sfnt_off00008f25.bin
0dbd14c8fb8d4b03b394159dd853492b1c2da032de405287d4f538977ff9a21f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F25 9836 bytes