PDF malware analysis — malicious · 76d54b7681e71db2

MALICIOUS

PDF

45.0 KB Created: 2020-08-24 05:21:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 2e7646510771b853b638ab8587d71b1b SHA-1: 4071aa12ea252e3ae6f737dae3a4f3133190f3c2 SHA-256: 76d54b7681e71db26ed2679dae3658122dd1cb13a1b6361996366f089704140c

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though partially obfuscated, includes text related to 'English biodata format free' and 'pokemon flora sky cheats', likely serving as lures. The primary malicious URL, ttraff.com, is flagged as a redirector, indicating an attempt to lead users to further malicious content or phishing sites.

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=english+biodata+format+free
- http://zerix.jennadmassage.com/uploads/1/3/0/8/130873995/f2c1929524b.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0431/7921/2959/files/pokemon_flora_sky_cheats.pdf
- https://cdn.shopify.com/s/files/1/0436/6820/9817/files/poredatinupe.pdf
- https://cdn.shopify.com/s/files/1/0454/2785/1422/files/jugifax.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fofigez.pdf
- https://cdn.shopify.com/s/files/1/0431/0453/4692/files/tigezakinud.pdf
- https://cdn.shopify.com/s/files/1/0437/7850/6904/files/xilulafilut.pdf
- https://cdn.shopify.com/s/files/1/0440/5461/0070/files/vemafufisiforo.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69296453687.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74098669839.pdf
- https://cdn.shopify.com/s/files/1/0437/9285/9293/files/organic_chemistry_with_biological_applications.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_off00007233.bin` `70f53e6cdd1d62c9ffdf79814e5b779153b4a99b8fb16cf2d6586544999f3738`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7233	5420 bytes
`font_01_sfnt_off0000846d.bin` `ed5144ab15123417063457355dde60946abcd7f701ddbea30fd5fb25b6bee2b6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x846D	10360 bytes

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