Malicious PDF — malware analysis report

Static analysis result for SHA-256 edc2701e9654b456…

MALICIOUS

PDF

51.1 KB Created: 2020-08-03 10:41:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2a3d2e756c70dddbd21184fec3f50c6 SHA-1: e1f9c17b51a8de8a696fe61e935555a2b2f45dad SHA-256: edc2701e9654b4567f03c883b3a28d8f1840fffab756d428acbe46ae64e7ebdd
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a Nissan Murano owner's manual. The link, https://ttraff.cc/wb?keyword=nissan%20murano%202010%20owners%20manual, points to known malicious infrastructure. The document also contains a large number of embedded links, many hosted on cdn.shopify.com, which is indicative of a link farm used for SEO poisoning or to obscure the final malicious destination. The ML classifier strongly flagged this PDF as malicious.

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/wb?keyword=nissan%20murano%202010%20owners%20manual
    • http://files.bennettcoffeeroasting.com/uploads/1/3/1/3/131398504/3576745.pdf
    • http://files.earringsandwhatever.com/uploads/1/3/0/7/130775143/1043602.pdf
    • http://files.cvma32-2.com/uploads/1/3/2/6/132680986/0e84501798.pdf
    • http://files.pinmetalup.com/uploads/1/3/1/3/131378776/fubavikagaga_tixinakirale_xomobadava_wukubo.pdf
    • http://files.pomerenkedrivered.com/uploads/1/3/2/8/132815220/477568.pdf
    • https://cdn.shopify.com/s/files/1/0437/8581/4177/files/42596209331.pdf
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/86880391755.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kenawuvotijogajutimev.pdf
    • https://cdn.shopify.com/s/files/1/0428/4396/3555/files/fobogikexem.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pekuxiwitijumowiviw.pdf
    • https://cdn.shopify.com/s/files/1/0431/1662/6082/files/bidupuna.pdf
    • https://cdn.shopify.com/s/files/1/0434/6249/2313/files/56117453033.pdf
    • https://cdn.shopify.com/s/files/1/0429/7755/8681/files/86700651393.pdf
    • https://cdn.shopify.com/s/files/1/0429/0510/8636/files/51119708168.pdf
    • https://cdn.shopify.com/s/files/1/0432/3013/4427/files/mudiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/4855/1068/files/71439568183.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_off000089e7.bin
412ed85c0c8d0d51b03bc37acf33dc7b644dffc567299e085687a476263e7bef
pdf-font-stream PDF embedded font (sfnt) at offset 0x89E7 5216 bytes
font_01_sfnt_off00009ba2.bin
e302784fa5fb59a8b28f66b6734d17b10bec6ace8e4b2174eb3b1ace91c71425
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BA2 10380 bytes