PDF malware analysis — malicious · a362326897f18ec8

MALICIOUS

PDF

40.1 KB Created: 2020-08-17 14:03:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: eda14a9d2ae2b97316fc1b682406a10a SHA-1: 14c01b36e17f12582c36bee5c842200993ef5d86 SHA-256: a362326897f18ec8ea6bf66491a5a6a11283f407d9836d94492516158aab9648

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, some of which are hosted on Shopify. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be social engineering via a deceptive link, likely leading to a phishing or malware download site.

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=android+phone+without+camera+in+uae
- http://xavud.covcathcolonels.com/uploads/1/3/1/8/131857419/mubepinigekev-xovola.pdf
- http://sujaj.federfarm.com/uploads/1/3/0/8/130814328/ganup.pdf
- https://cdn.shopify.com/s/files/1/0452/8999/6450/files/guxitosifop.pdf
- https://cdn.shopify.com/s/files/1/0434/4872/9766/files/uncivil_liberties_author_crossword.pdf
- https://cdn.shopify.com/s/files/1/0435/2727/4645/files/sociology_book_for_css.pdf
- https://cdn.shopify.com/s/files/1/0429/9181/2771/files/62458499664.pdf
- https://cdn.shopify.com/s/files/1/0431/6577/8076/files/cours_brucellose.pdf
- https://cdn.shopify.com/s/files/1/0440/7135/4533/files/tetevofubeken.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78030006053.pdf
- https://cdn.shopify.com/s/files/1/0434/7274/8709/files/argumentative_essay_structure.pdf
- https://cdn.shopify.com/s/files/1/0430/7792/7072/files/17867697580.pdf
- https://cdn.shopify.com/s/files/1/0439/6358/0574/files/9881912326.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00005ef4.bin` `96980d45409cf0466cd4453f42ae8a73e345d3a008d95cd669c46db52dbe3b4c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5EF4	5184 bytes
`font_01_sfnt_off00007078.bin` `c9112ae500bcb2f209aa0dcfa43b82001cf05480c3d8cf7c535063798973097e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7078	10284 bytes

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