PDF malware analysis — malicious · 2961302715d031ba

MALICIOUS

PDF

42.6 KB Created: 2020-09-09 10:00:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e8fdcf55ce2ced022841bb592bb7ca7d SHA-1: d91e60ad1e8a797f2f7023b2a3d74b062f462d02 SHA-256: 2961302715d031bafd3cb4ce01b86591948c24303b5629545061bb8c6102066b

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded URLs, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the string 'cd booklet template word 2003' and a URL that appears to be a lure for downloading a template. This suggests a social engineering attack aiming to redirect users to a malicious site. 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=cd+booklet+template+word+2003
- https://cdn.shopify.com/s/files/1/0440/2606/9157/files/cpdlc-_dcl_flight_deck_user_guide.pdf
- https://cdn.shopify.com/s/files/1/0462/9148/4833/files/java_developer_cv_template.pdf
- https://cdn.shopify.com/s/files/1/0430/9925/9031/files/84468018828.pdf
- https://cdn.shopify.com/s/files/1/0434/7949/8917/files/semimibixer.pdf
- https://cdn.shopify.com/s/files/1/0437/1087/3750/files/storytelling_como_fazer.pdf
- https://cdn.shopify.com/s/files/1/0434/8854/2872/files/hack_kahoot_auto_answers.pdf
- https://static.usrfiles.com/ugd/299074_16b4ae06556b4e59a2731d5469eff9d8.pdf
- https://static.usrfiles.com/ugd/0c8cc8_9d30078ec4c44c3fa8f11c73627bdeb4.pdf
- https://cdn.shopify.com/s/files/1/0434/3863/7208/files/ravefubudokojativewapa.pdf
- https://cdn.shopify.com/s/files/1/0429/7133/2767/files/lofulezuponoforidomi.pdf
- https://cdn.shopify.com/s/files/1/0429/9587/5989/files/samsad_english_to_bengali_dictionary_file.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_off000068ce.bin` `f8ba2584d443b183feaa39b4301d489c9276caab86cc3a0abb560d6e9b83b0dd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x68CE	5564 bytes
`font_01_sfnt_off00007bab.bin` `991568a703534bf4f3c77bc07666b1df19b76e98a0ea8be1d27ce5daa5eda121`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7BAB	9900 bytes

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