Malicious PDF — malware analysis report

Static analysis result for SHA-256 c756777fc1784304…

MALICIOUS

PDF

63.4 KB Created: 2020-08-24 20:09:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1420094b11b4a7703207eff87f45c964 SHA-1: 0e9d48bfd88569ddad203a7c4f17cebe712c0531 SHA-256: c756777fc17843047b0524784228927f97fd6b6222d1eb94ef8a45129d2c207d
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=guide+langues+vivantes+eduscol'. Another critical heuristic indicates a PDF link farm hosted on Shopify, suggesting a tactic to distribute malicious content or manipulate search engine results. The ML classifier strongly supports the malicious verdict.

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.com/pify?keyword=guide+langues+vivantes+eduscol
    • http://files.edengardenandpets.com/uploads/1/3/0/7/130776401/sataxijizifovunik.pdf
    • http://figenipe.ddjohnsonassociatesllc.com/uploads/1/3/0/8/130814579/1931964.pdf
    • http://files.elementssalononline.com/uploads/1/3/1/6/131637316/50cb583733897b4.pdf
    • https://cdn.shopify.com/s/files/1/0428/0903/2863/files/netazijasimexevubabowurit.pdf
    • https://cdn.shopify.com/s/files/1/0436/9140/9562/files/gobikunikuvak.pdf
    • https://cdn.shopify.com/s/files/1/0428/8210/5511/files/85343916746.pdf
    • https://cdn.shopify.com/s/files/1/0431/5830/6965/files/13568472619.pdf
    • https://cdn.shopify.com/s/files/1/0439/0980/8280/files/diragepab.pdf
    • https://cdn.shopify.com/s/files/1/0433/4531/3941/files/fozoxatezobajadowi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5788/0996/files/74235296845.pdf
    • https://cdn.shopify.com/s/files/1/0429/3325/6345/files/sakhi_telugu_movie_songs_free_320kbps.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40133843423.pdf
    • https://cdn.shopify.com/s/files/1/0432/9986/4734/files/84879299197.pdf
    • https://cdn.shopify.com/s/files/1/0434/4076/7132/files/cancer_de_tiroides_articulo_de_revision.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_off00007fe9.bin
c0eea6323487a0cdc4d3310fe83d583b6f829ca2ad240ce096dd7f4a619938b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE9 5100 bytes
font_01_sfnt_off0000915b.bin
0a31786550920c99087b6988109ff4191b9ad9f31d9e9da16197b0f031160d11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x915B 10356 bytes
font_02_sfnt_off0000b245.bin
8df92798dd11413d39a7083152bfc650a49aaae7f25b127e55391c6ceb94adb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB245 16524 bytes
font_03_sfnt_off0000e396.bin
ebc776edc26047b40f37dfed6d9eb26f661138a8bce0bd38fd88b675326f9ba4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE396 2708 bytes

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