Malicious PDF — malware analysis report

Static analysis result for SHA-256 d312f1f6a5d365c5…

MALICIOUS

PDF

45.9 KB Created: 2020-08-31 14:25:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1a92fe0a421a716bcb5566dfd43e27a1 SHA-1: 546bc851ee16c42373a1aeee56a79f002a305dac SHA-256: d312f1f6a5d365c587da1d7c006feb75a7b2007512be9a1498f01eb11fe8f7d2
152 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, https://ttraff.com/pify?keyword=photography+company+profile+sample+pdf, is flagged as a malicious redirector. The document body, though partially corrupted, suggests a lure related to a 'photography company profile sample pdf'. The presence of numerous external PDF links, many hosted on Shopify, indicates a potential link farm for SEO manipulation or traffic redirection. 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.com/pify?keyword=photography+company+profile+sample+pdf
    • https://cdn.shopify.com/s/files/1/0439/1141/3912/files/71839366659.pdf
    • https://cdn.shopify.com/s/files/1/0430/8205/5829/files/alelos_multiplos_exercicios.pdf
    • https://cdn.shopify.com/s/files/1/0435/3556/4949/files/height_of_a_binary_tree.pdf
    • https://cdn.shopify.com/s/files/1/0433/7149/5574/files/bioshock_rapture_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/1049/7434/files/arrancame_la_vida_libro_descargar_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0434/5197/3789/files/93331563154.pdf
    • https://cdn.shopify.com/s/files/1/0428/3292/0739/files/53128015826.pdf
    • https://static.usrfiles.com/ugd/6c98bc_0138271b235042b8ba994aa2809dbc9b.pdf
    • https://static.usrfiles.com/ugd/e4ff69_cb78319ece824d57bc4ab48820c8be76.pdf
    • https://static.usrfiles.com/ugd/b8c837_5534b1fd798b4bd2ab91d8ec39330eb0.pdf
    • https://static.usrfiles.com/ugd/04c368_59ca65e0bff34d8d9701507faf88d2cb.pdf
    • https://static.usrfiles.com/ugd/b8c837_36ab2292abc746c7bd03bf81886881ef.pdf
    • https://cdn.shopify.com/s/files/1/0432/6142/7876/files/29728266178.pdf
    • https://cdn.shopify.com/s/files/1/0431/4644/4960/files/conny_andersson_reporter.pdf
    • https://cdn.shopify.com/s/files/1/0428/3973/6487/files/imp_catcher_osrs_quest_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/2394/9224/files/33447317592.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_off00005d73.bin
c76664d2ab5dbe8438535cf4986eacecb65022b7fe03a000b2ce28d74af96a98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D73 5672 bytes
font_01_sfnt_off000070a4.bin
c99c4d98bc6f1f14774e2cabb824c400661ab11bbc2b979f12cb3332e800b9cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70A4 10228 bytes
font_02_sfnt_off000093d0.bin
d8a1a34de14a7b8fce5e51635835121d353d188f9ac9ce1e11538509fd4c5cdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93D0 16060 bytes

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