Malicious PDF — malware analysis report

Static analysis result for SHA-256 65be23c58a84548b…

MALICIOUS

PDF

53.4 KB Created: 2020-08-20 23:41:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 742a76fa9ac199439237fdcd4e5a31a9 SHA-1: 5ecf04a0a938bd8ef36ecc298b2caa57c14cacf0 SHA-256: 65be23c58a84548b3ebebc7658c68d6a976680448dab312189a1fe1d7ff19e35
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm with 28 external PDF links, including a critical redirector link to 'ttraff.com'. This indicates a likely attempt to direct users to malicious content or phishing sites. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URLs and link farm structure suggest a phishing or malware distribution lure.

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=bohemia+rapper+song
    • http://files.elizabethwheeler1.com/uploads/1/3/1/8/131858916/pefowuzide_galaw.pdf
    • http://solunaxor.masterpiecemastiffs.com/uploads/1/3/0/8/130814328/diwuwusixuv.pdf
    • http://files.618rackrecruits.com/uploads/1/3/0/7/130739284/kulalimo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0430/7327/4018/files/kudogu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3500/7893/files/32120295505.pdf
    • https://cdn.shopify.com/s/files/1/0431/5398/1594/files/46414477544.pdf
    • https://cdn.shopify.com/s/files/1/0431/4310/2626/files/31139056031.pdf
    • https://cdn.shopify.com/s/files/1/0429/5763/5735/files/8904037676.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/47939407882.pdf
    • https://cdn.shopify.com/s/files/1/0427/9740/0223/files/managerial_accounting_braun_tietz_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0436/0568/8483/files/65963182457.pdf
    • https://cdn.shopify.com/s/files/1/0430/8271/1201/files/82196418386.pdf
    • https://cdn.shopify.com/s/files/1/0438/2870/7485/files/tanaman_c3_c4_dan_cam.pdf
    • https://cdn.shopify.com/s/files/1/0430/1222/7225/files/zetitinizari.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070b8.bin
0dee0543e0d3813141269ea9e347a8a62488f9b303a9181bd7a3e5ba5d67ff3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70B8 5248 bytes
font_01_sfnt_off0000826b.bin
b71d7ee21b4043be4700aa75e9a9c8390e88199f2a08ad80d4fd6fd358d0018b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x826B 2748 bytes
font_02_sfnt_off00008e19.bin
f31e9c1be2e1273cef99972bb9e89c3149db6daa839c59cb6380a915bb98b68a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E19 10744 bytes
font_03_sfnt_off0000b1da.bin
1135e8a0e8fe436dba7adc4f34718a689b46316e5b28bee267b7e0df7a37af9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB1DA 16556 bytes

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