PDF malware analysis — malicious · 149a59e465e07f9e

MALICIOUS

PDF

52.7 KB Created: 2020-09-07 03:54:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 6a764b6d847e8b82da6f49d4242ebb00 SHA-1: cd2f46795395bda5747f95544f6b936731f0af38 SHA-256: 149a59e465e07f9e6199bd6192cf45aafdd6ba500168a85fe36d9bd81e03718c

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link disguised as medical information, which is a common social engineering tactic. The link directs to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier strongly supports the malicious nature of this PDF.

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.link/wix?keyword=formic+acid+on+warts
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://static.usrfiles.com/ugd/911c12_373c0891f2a94553ac67c1ac0065b399.pdf
- https://static.usrfiles.com/ugd/0a0016_efc76bf96c43423ea9aceb6ebb24e84a.pdf
- https://static.usrfiles.com/ugd/f91cf1_024eae8e5b8e4d4fb8fc7b29aaee92a2.pdf
- https://cdn.shopify.com/s/files/1/0433/0120/8232/files/ff15_the_cure_for_insomnia_guide.pdf
- https://cdn.shopify.com/s/files/1/0462/6241/9605/files/gewuwatamif.pdf
- https://cdn.shopify.com/s/files/1/0429/5104/9370/files/furavokimixodorekakiwig.pdf
- https://cdn.shopify.com/s/files/1/0437/7221/5448/files/whirlpool_dishwasher_manual.pdf
- https://cdn.shopify.com/s/files/1/0437/6815/2216/files/kibimakevozonofesu.pdf
- https://cdn.shopify.com/s/files/1/0432/4930/3720/files/maravadazubelo.pdf
- https://cdn.shopify.com/s/files/1/0431/9569/5265/files/95833073675.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00008313.bin` `0f7e71bda8ebd9ebba111da2c0c4ba737e7a76113765fef06c4f8696bf099e92`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8313	4772 bytes
`font_01_sfnt_off00009329.bin` `237c1fb79a7b52053ad23ac747f35fcab481217a9556480d3ee791f205ef8940`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9329	10868 bytes
`font_02_sfnt_off0000b80e.bin` `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB80E	4324 bytes

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