Malicious PDF — malware analysis report

Static analysis result for SHA-256 7de4ddac894f2dc7…

MALICIOUS

PDF

39.8 KB Created: 2020-08-14 04:51:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab21755ff620907635fcd85ebe21b413 SHA-1: 421b8c48767bf635787e1353e87f378adc9daed7 SHA-256: 7de4ddac894f2dc7b21ed0ada4fd01f36eed296dd398b14729f44aeea773ae2c
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/wb?keyword=semiotica%20que%20es%20pdf', likely serves as a lure to a phishing or malware distribution site. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=semiotica%20que%20es%20pdf
    • http://woxox.rachea.com/uploads/1/3/1/1/131164250/3603132.pdf
    • http://kuvigadub.obxelectricians.com/uploads/1/3/2/6/132680903/kinasu.pdf
    • http://files.pbgmys94.com/uploads/1/3/0/8/130813777/damenusazipowemogun.pdf
    • https://cdn.shopify.com/s/files/1/0435/4909/8148/files/bond_energy_calculation.pdf
    • https://cdn.shopify.com/s/files/1/0427/4041/6678/files/jilupifolivotomuwufadov.pdf
    • https://cdn.shopify.com/s/files/1/0434/7559/9524/files/mtd_riding_mower_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/7194/7430/files/30034209319.pdf
    • https://cdn.shopify.com/s/files/1/0437/5920/6549/files/60374372907.pdf
    • https://cdn.shopify.com/s/files/1/0449/6248/0296/files/kalumagegedufupokafirano.pdf
    • https://cdn.shopify.com/s/files/1/0429/3830/2630/files/french_learning_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/96745304577.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gofusibosaduxigagixuvoma.pdf
    • https://cdn.shopify.com/s/files/1/0430/4506/0762/files/64032503163.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39738284996.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_off00005b58.bin
e1b67c49386d4b87873dcd36dd25a39ba5306d4a7062e988bf769e0f6adbabd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B58 5404 bytes
font_01_sfnt_off00006da2.bin
4886a21377fb57aa63ba4f3234f06562822dc05f828bb0c0a25321c9bb4249da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA2 11000 bytes

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