Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fe067cc77373534…

MALICIOUS

PDF

42.8 KB Created: 2020-08-10 15:21:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 31664f4fec088150587b16a098a9b7fa SHA-1: 34d6616a3ad4743a83798bf8a504694939e88fa6 SHA-256: 5fe067cc773735345904b2a9c2e9418080e7c00f5a34db834783b515c362fd02
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=blitzing+biology+pdf'. It also exhibits characteristics of a link farm, embedding numerous external PDF links. The document body, though partially corrupted, contains text suggesting a lure related to 'biology pdf', likely intended to trick users into clicking the malicious link.

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=blitzing+biology+pdf
    • http://files.thesearenotmygrandkids.com/uploads/1/3/0/7/130776208/pamalofosa-xobanot-ripofix.pdf
    • http://relijizab.kohlerfitness.com/uploads/1/3/1/4/131406717/zikugit.pdf
    • http://files.emkdgenealogy.com/uploads/1/3/1/4/131453250/4991405.pdf
    • http://files.tibetanbuddhismsatx.com/uploads/1/3/1/0/131070291/nedadej_mamitevifibuxos.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/9963/4328/files/63278604748.pdf
    • https://cdn.shopify.com/s/files/1/0433/4875/4600/files/oh_kill_em_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0432/5936/3478/files/prime_numbers_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0429/9846/4661/files/bedumixetorepodukafefuwik.pdf
    • https://cdn.shopify.com/s/files/1/0439/6512/0670/files/48659734673.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/79944072475.pdf
    • https://cdn.shopify.com/s/files/1/0431/7573/9560/files/15171885255.pdf
    • https://cdn.shopify.com/s/files/1/0431/5352/2850/files/proper_twitter_to_discord_webhook.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6206/files/vuvofedizaxikuku.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71340125447.pdf
    • https://cdn.shopify.com/s/files/1/0432/2862/7108/files/59962787408.pdf
    • https://cdn.shopify.com/s/files/1/0439/1721/3851/files/zuxam.pdf
    • https://cdn.shopify.com/s/files/1/0438/9021/3019/files/jafixekamidelugir.pdf
    • https://cdn.shopify.com/s/files/1/0432/0165/9043/files/detexobupusifepowotusi.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006992.bin
ea935d552a12233b2bda63b0d91b71811dba8d48c8d3bbd843978f9f53b80f2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6992 5068 bytes
font_01_sfnt_off00007af6.bin
907110b5b46a96316ac3b24bc428fe08156ecdcad870090bdd76ca866a022aef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF6 10424 bytes

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