Malicious PDF — malware analysis report

Static analysis result for SHA-256 fadecf7dbd5e4507…

MALICIOUS

PDF

51.9 KB Created: 2020-07-29 10:43:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e77e0fdfbd044fa38b22def413b62975 SHA-1: a2b944c473040a472b8b26cb49eac3a56d1d1120 SHA-256: fadecf7dbd5e45074673a1a03d0eb566cf65107d1cad39e7bd78d660a647fe4b
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Bernoulli equation differential equations pdf', suggesting a lure for academic or technical users. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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=bernoulli+equation+differential+equations+pdf
    • http://files.carriesimonauthor.com/uploads/1/3/2/6/132681516/lepulonetanizu-xawisaluxa-fipikix-pisobekuvo.pdf
    • http://files.bmhcounseling.com/uploads/1/3/0/7/130740190/a5d08cf09d604e6.pdf
    • http://files.alondraparkchessclub.com/uploads/1/3/2/6/132682792/6027268.pdf
    • http://files.mcspg.com.au/uploads/1/3/0/7/130740566/pinuvuxexijupiz_fujunutiliwof.pdf
    • http://files.mcspg.com.au/uploads/1/3/0/7/130740566/pinuvuxexijupiz_fujunutiliwof
    • https://cdn.shopify.com/s/files/1/0435/3998/8648/files/17514873501.pdf
    • https://cdn.shopify.com/s/files/1/0429/5219/6249/files/fazasodivozufef.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7391/files/naxivoropenixad.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pewugokujugiwiburonanas.pdf
    • https://cdn.shopify.com/s/files/1/0429/9263/1962/files/61144809250.pdf
    • https://cdn.shopify.com/s/files/1/0429/4557/7116/files/wibivexix.pdf
    • https://cdn.shopify.com/s/files/1/0432/2168/0283/files/80313705112.pdf
    • https://cdn.shopify.com/s/files/1/0435/4015/2475/files/rilibixop.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/zinikodajamunigudo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8716/7645/files/14263401885.pdf
    • https://cdn.shopify.com/s/files/1/0428/8544/7833/files/70477283140.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_off0000689b.bin
4c7f78b0ca331bbe3ca78ae06123a748be7ff3f82e60b6482dd066283f0ad833		 pdf-font-stream PDF embedded font (sfnt) at offset 0x689B 5092 bytes
font_01_sfnt_off000079ee.bin
8d10b82eb0f30b33ff3c645e4a82a426897a5cacbcfe1a74573de36a756874a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79EE 15192 bytes
font_02_sfnt_off0000a9de.bin
c32f541af60a1796578a7be0847193cb1f967b9e729b559083b6d36c13c9b9ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9DE 16252 bytes

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