Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cb356cd4cf4722c…

MALICIOUS

PDF

45.1 KB Created: 2020-08-24 01:26:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fa6c149a525bacee8c391c3e9de695a SHA-1: 7b776bec6f60f5411f033e9e7e131f9c4143708d SHA-256: 6cb356cd4cf4722c1dc907b81ca3b9d4a712a89fe40395037958473faae2624c
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including one pointing to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=electro+pneumatic+solenoid+valve+pdf'. The heuristic firings indicate this PDF is part of a link farm, likely for SEO manipulation or to distribute malicious content. The ML classifier strongly flagged this PDF as malicious.

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=electro+pneumatic+solenoid+valve+pdf
    • http://files.garylane.net/uploads/1/3/1/4/131438177/b730b.pdf
    • http://files.nekimastrategies.net/uploads/1/3/2/8/132814589/pojawogos_vojosipalegazu.pdf
    • http://wizumexa.faustreading.com/uploads/1/3/1/8/131855997/vujokinalem_bebuzem.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/2370/3970/files/95742456408.pdf
    • https://cdn.shopify.com/s/files/1/0434/3041/2437/files/a_pocket_style_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/5812/5213/files/sdcard_games_com_mojang_minecraftworlds.pdf
    • https://cdn.shopify.com/s/files/1/0438/2189/1746/files/jarodigegod.pdf
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/8274698817.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/9835315242.pdf
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/bupademuxokujikovurumiki.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/4280424599.pdf
    • https://cdn.shopify.com/s/files/1/0433/6815/3253/files/39152034314.pdf
    • https://cdn.shopify.com/s/files/1/0428/4517/5971/files/cards_against_humanity_blank_cards.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3496/files/47642405944.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1810/files/neburanebokimezil.pdf
    • https://cdn.shopify.com/s/files/1/0448/6466/7810/files/anlamli_hikayeler.pdf
    • https://cdn.shopify.com/s/files/1/0431/0335/5034/files/valulisafajunivakajuki.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_off00007289.bin
97f91d052344e039bc637e701c29053b9f3e3405c331c3e5e5d41dbe6fd303e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7289 5320 bytes
font_01_sfnt_off00008488.bin
8198a92abbb1dd833403ffc059fc9091b4d2f80fa4fdf93eabff2bb15621eb61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8488 10164 bytes

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