Malicious PDF — malware analysis report

Static analysis result for SHA-256 94dc57e715017d3f…

MALICIOUS

PDF

54.2 KB Created: 2020-08-12 12:26:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 28800ff84f6d711da626126dc58ad26a SHA-1: 265e7fcbcfebb8a45f9db84b9197245ebf433bcb SHA-256: 94dc57e715017d3fa8a2595baaa61f0f2265c29110786ddcb5868d274d849db6
154 Risk Score

Malware Insights

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

The PDF contains a high density of external links, many of which point to a redirector service known for malicious activity. The primary malicious URL identified is https://ttraff.cc/pify?keyword=types+of+knowledge+representation+in+artificial+intelligence+pdf, which likely serves as a lure to download further malicious content. The ML classifier strongly indicated maliciousness, supporting the conclusion that this PDF is designed for malicious redirection.

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=types+of+knowledge+representation+in+artificial+intelligence+pdf
    • http://nuzugeze.chemistryverse.com/uploads/1/3/0/7/130739415/vukakirunuxogu-keloduverari-kifaxiz-vizijegem.pdf
    • http://jituge.beneshieldfinancial.com/uploads/1/3/1/0/131070152/fc22b288a.pdf
    • http://kofun.veronicaholisticteacher.com/uploads/1/3/0/8/130814535/topiki.pdf
    • http://files.bostonmedstaffing.com/uploads/1/3/2/3/132303147/8ab7f1188f59.pdf
    • http://files.aviscafineart.com/uploads/1/3/1/8/131856076/dubizareduduje.pdf
    • https://cdn.shopify.com/s/files/1/0437/7218/2685/files/32079851861.pdf
    • https://cdn.shopify.com/s/files/1/0429/6926/8373/files/nagipidedujubevakom.pdf
    • https://cdn.shopify.com/s/files/1/0434/5298/9607/files/cancellation_of_contract.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1087/files/terafowebediriret.pdf
    • https://cdn.shopify.com/s/files/1/0433/9066/4860/files/bufejupebuxunip.pdf
    • https://cdn.shopify.com/s/files/1/0435/2252/3288/files/96053827754.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/kisukodanetedupepilon.pdf
    • https://cdn.shopify.com/s/files/1/0431/6217/3604/files/duzojijibiguzoza.pdf
    • https://cdn.shopify.com/s/files/1/0433/7228/2008/files/6436376551.pdf
    • https://cdn.shopify.com/s/files/1/0439/2720/8091/files/docker_machine_ssh.pdf
    • https://cdn.shopify.com/s/files/1/0438/3526/1085/files/mcmagic_audio_pack.pdf
    • https://cdn.shopify.com/s/files/1/0428/7676/4327/files/zefojuwanolij.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_off00008e02.bin
9fdc3aa98898d0c5adc535a24eeb179fbf911470000f2f894dfcb05c52b2d15a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E02 5532 bytes
font_01_sfnt_off0000a102.bin
3f8a42a091f684b5a2b31f3e1d67b1b3c61c1ecb115c39f52dd9a5a8d22e0e72		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA102 13212 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.