Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f09f3cb4054438e…

MALICIOUS

PDF

46.7 KB Created: 2020-08-02 15:13:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d63f9685f48b202a9751a663a6553cbe SHA-1: 457741fad62819a39a3bae21560f556f808c4047 SHA-256: 2f09f3cb4054438e3c90d318d7220532c9ee9ff6175bfe922ce1e8ad3734efd0
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=adamant+dragon+guide+2017'. Additionally, it exhibits a PDF link farm behavior, with numerous external PDF links, many hosted on cdn.shopify.com. The document body, though partially corrupted, contains the text 'Adamant dragon guide 2017' and the malicious URL, suggesting a lure to a malicious site under the guise of providing a guide. No scripts were extracted from this sample.

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=adamant+dragon+guide+2017
    • http://files.vanitypicturebooth.com/uploads/1/3/1/8/131856330/rexugoteravekipanuf.pdf
    • http://files.hbnaz.org/uploads/1/3/2/3/132303378/sosizise_winegovolumag_wilivemopi.pdf
    • http://files.martinshoalsbaseball.com/uploads/1/3/0/7/130776673/a46b91.pdf
    • http://files.annemcmillslighting.com/uploads/1/3/0/8/130873932/656637.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mupuxisupevijerabufogete.pdf
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/29285932576.pdf
    • https://cdn.shopify.com/s/files/1/0437/1991/7720/files/fegigukipidunabeg.pdf
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/15284891193.pdf
    • https://cdn.shopify.com/s/files/1/0429/5249/1159/files/ziledagasedavimipuzaza.pdf
    • https://cdn.shopify.com/s/files/1/0437/2257/1930/files/relepum.pdf
    • https://cdn.shopify.com/s/files/1/0430/3355/9203/files/togazuxefo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2122/1533/files/lejil.pdf
    • https://cdn.shopify.com/s/files/1/0431/7895/0810/files/58252903161.pdf
    • https://cdn.shopify.com/s/files/1/0430/2218/8701/files/lefevekasufe.pdf
    • https://cdn.shopify.com/s/files/1/0428/0470/7491/files/99568895252.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_off00006a0c.bin
5fb37736ba37dd9b03ca540ac861aab796ee582df180d38feb9e54d3b2cb4149		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0C 5212 bytes
font_01_sfnt_off00007bb5.bin
a69968d5515fee1d31b6a660f540fb01fec08caf56703e92487d7bccb4ad083c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB5 10564 bytes
font_02_sfnt_off00009fd8.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FD8 4324 bytes

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