Malicious PDF — malware analysis report

Static analysis result for SHA-256 be62806ee5c8ddd5…

MALICIOUS

PDF

46.5 KB Created: 2020-08-07 18:54:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12482c4d3f0cb5e32fb1264c35f36851 SHA-1: 28834f54ea7698481c6d79ea4e7551f60f7482c6 SHA-256: be62806ee5c8ddd5c297d46d51b1d1b3a5991efdee4bf1bb0e1bf64c68e2d3ad
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised as a document about house plans. This suggests a phishing or social engineering attempt to lead the user to malicious content. The PDF also hosts a large number of external links, many pointing to Shopify, which is characteristic of SEO link farm abuse. 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=four+bedroom+bungalow+house+plans+pdf
    • http://files.ladukecoaching.com/uploads/1/3/2/8/132815002/tagisenonojajog_fereliwopura.pdf
    • http://files.jeremypelletier.com/uploads/1/3/2/6/132681384/8787101.pdf
    • http://files.bethmaries.com/uploads/1/3/2/6/132682585/todanubo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/kavesasuleteripokoli.pdf
    • https://cdn.shopify.com/s/files/1/0438/0390/2112/files/84434670355.pdf
    • https://cdn.shopify.com/s/files/1/0440/2629/8533/files/how_to_say_no_in_every_language.pdf
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/javapazu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6580/2905/files/dc_ac_inverter_circuit_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0432/8439/8246/files/xulorelexodevagere.pdf
    • https://cdn.shopify.com/s/files/1/0432/9363/8811/files/35537129730.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xopafomapezujiwowab.pdf
    • https://cdn.shopify.com/s/files/1/0434/5852/7397/files/58394093155.pdf
    • https://cdn.shopify.com/s/files/1/0432/6280/4136/files/43356147177.pdf
    • https://cdn.shopify.com/s/files/1/0431/2960/2205/files/amadeus_basic_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/7002/9975/files/47272096728.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_off00006794.bin
3854c41b6a06c6086aa702c710c222c64affac65746f495348e41f1319c69ba8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6794 5396 bytes
font_01_sfnt_off000079c8.bin
24609ae0f068bd7714ffe17fc2f804bbe369fe847a8fc0d8da4544b2d4d7a04c
pdf-font-stream PDF embedded font (sfnt) at offset 0x79C8 10796 bytes
font_02_sfnt_off00009eb7.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x9EB7 4324 bytes