Malicious PDF — malware analysis report

Static analysis result for SHA-256 c223b97be0f85ba4…

MALICIOUS

PDF

40.8 KB Created: 2020-07-09 20:27:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c879bae9eb575d4018a0ea90bf62ec98 SHA-1: ac38704e022df9dd05787e07b00aa95e13f21615 SHA-256: c223b97be0f85ba4a3bac23cbe6a38b930876841cec4a4207eea6f231c632493
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, including a redirector link to 'ttraff.com', indicating a likely phishing or malware distribution attempt. The heuristic 'PDF_SEO_LINK_FARM' further suggests that the document is designed to host numerous external links, potentially for SEO poisoning or to spread malicious content across various domains. The ML classifier strongly supports the malicious nature of this PDF.

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/wb?keyword=linux%20lab%20hands%20on%20linux%20pdf
    • http://files.killjoy.info/uploads/1/3/2/8/132816158/444fa6d86d0810f.pdf
    • http://files.maeveleslie.com/uploads/1/3/2/8/132815008/vibogegowuna.pdf
    • http://files.livingwatersmidwifery.com/uploads/1/3/1/4/131406295/7915612.pdf
    • http://files.mindbodyconnectionmassagepilates.com/uploads/1/3/0/9/130969548/mufafiponeko_segutexikutunel.pdf
    • http://files.hollisguitars.com/uploads/1/3/2/8/132814969/rinex.pdf
    • http://files.srgchi.org/uploads/1/3/1/3/131379951/zitejumewibopux_bajugetelor_dobiwezo_golubimuruz.pdf
    • http://files.somersetparkhoa.com/uploads/1/3/0/7/130739686/3745955.pdf
    • http://files.framemysore.org/uploads/1/3/1/3/131384789/7349004.pdf
    • http://files.greenjeanssale.com/uploads/1/3/1/3/131379223/5198121.pdf
    • http://files.surrenderedtochrist.org/uploads/1/3/2/6/132681656/wulegi.pdf
    • http://files.elizabethkpetersonlab.com/uploads/1/3/1/3/131384789/sibufajoj-xuvini.pdf
    • https://padozobesix.files.wordpress.com/2020/06/47728170119.pdf
    • https://ronezas.files.wordpress.com/2020/06/85073079116.pdf
    • https://motonukem.files.wordpress.com/2020/06/35176151782.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bizem.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/texigusowemojegovivek.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81108552740.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mitev.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/muxajuvorupi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/munununexarusod.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_off000061a4.bin
4416988ee914ddf7a32ebc998061edd2e525ab3c5d10a5515d0a7a334d59ebec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61A4 4868 bytes
font_01_sfnt_off00007214.bin
ce5a0eaed0378e4c47ddc26839b40c965ea40978b1c0760bc8206e2d1f22a007		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7214 10748 bytes

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