PDF malware analysis — malicious · 6656e17b7656c7d7

MALICIOUS

PDF

40.3 KB Created: 2020-09-05 18:22:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 32688a5ee8ec3bc5c44f194b46a19b5e SHA-1: 628608b932009a1783896807b409d57238c1d2b2 SHA-256: 6656e17b7656c7d7a6c8607aacf966132fa5579529b53d68ba8c00bc7f03bd92

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of the primary links directs to a known malicious redirector, indicating a phishing or malicious content distribution attempt. The document body, though heavily obfuscated, contains the target URL and references to external PDFs, reinforcing the link farm and redirection attack pattern.

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.me/wix?keyword=augsburger+puppenkiste+lieder
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0433/8702/7605/files/78668928978.pdf
- https://cdn.shopify.com/s/files/1/0465/3521/3206/files/wawivewo.pdf
- https://cdn.shopify.com/s/files/1/0428/5657/9228/files/zezoxekagubuk.pdf
- https://static.usrfiles.com/ugd/6e3131_245f3cf0716b45c5b6acca3bfb68cb77.pdf
- https://static.usrfiles.com/ugd/c0a468_9f0f929e3754409e9c0f059e33d6f682.pdf
- https://cdn.shopify.com/s/files/1/0434/0819/5751/files/79999678122.pdf
- https://cdn.shopify.com/s/files/1/0432/1574/9281/files/atrahasis_book.pdf
- https://static.usrfiles.com/ugd/0a0016_b5fe3b39fdde4fb18312ba995e336fa5.pdf
- https://static.usrfiles.com/ugd/f14cf6_64f9d1350792416c8b065b633ed77e59.pdf
- https://static.usrfiles.com/ugd/ab059d_19e5d6e1d35c4ac6be01fa41eed868c9.pdf
- https://static.usrfiles.com/ugd/70094d_20f1f8c0c2fc43e3be1a972440d4e3e9.pdf
- https://static.usrfiles.com/ugd/d99ef3_702587f510d54edb84410f52d8d7deab.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_off00005079.bin` `edf66bcd9b77fae329c3666afa14a3be8288f3a39c2c3c3389abd5f1c5381e5f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5079	5112 bytes
`font_01_sfnt_off000061ec.bin` `03708ea22512b18f5a6dcd895dad8dbc74e383f539f1b7402082541721fb6255`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61EC	16140 bytes

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