PDF malware analysis — malicious · 6f9c3b09a4ac8772

MALICIOUS

PDF

37.8 KB Created: 2020-08-21 23:57:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a0e376a0c1320a484391255ebb02ac3f SHA-1: a475ae319d4cad896927eda6de9e64642986d70f SHA-256: 6f9c3b09a4ac8772f33b22d43ee2b9febff8a3c8ec5b849cedf2cfe8fad9270a

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though partially corrupted, suggests a lure related to an educational worksheet. The presence of multiple external links, many hosted on Shopify, indicates a potential link farm or redirection scheme designed to lead users to malicious content. 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.com/pify?keyword=personification+worksheet+2nd+grade
- http://nizososiv.acmedogrun.com/uploads/1/3/0/8/130814070/sobabonikojabewuw.pdf
- http://files.tactileearth.com/uploads/1/3/1/4/131482991/247987.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0430/3536/1442/files/kopifujomuwejo.pdf
- https://cdn.shopify.com/s/files/1/0433/3037/1738/files/javoxojivowopip.pdf
- https://cdn.shopify.com/s/files/1/0435/4569/0266/files/gipowijid.pdf
- https://cdn.shopify.com/s/files/1/0429/1543/0553/files/roxoramowapekigaful.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13534048661.pdf
- https://cdn.shopify.com/s/files/1/0431/1724/8672/files/viteg.pdf
- https://cdn.shopify.com/s/files/1/0431/5024/6054/files/88809808395.pdf
- https://cdn.shopify.com/s/files/1/0440/2210/4222/files/90513276637.pdf
- https://cdn.shopify.com/s/files/1/0435/5738/8440/files/worivaxupilekuj.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000558f.bin` `615e5ef0db4ea216b4c334a5d2f95cb5723b075baca6a282eda8d769fbf7212f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x558F	5540 bytes
`font_01_sfnt_off0000686d.bin` `85198e0bf1f572bcefc1f266a8da0283c11ae33bfff76775a29608c6c61e4c7f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x686D	9992 bytes

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