PDF malware analysis — malicious · cce173cf0ef4de63

MALICIOUS

PDF

43.9 KB Created: 2020-09-10 16:33:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c7b2c238647e5c69f20a98d76e5dc33f SHA-1: 25c72f265585ed5d8e470ed299cbd874dc00adf9 SHA-256: cce173cf0ef4de638f52c8025b4039b1d4a1a30aef1b469b0512d8f3649bb683

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The document body text, though partially corrupted, suggests a lure related to 'hot work permit template word'. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or social engineering attempt to direct users to malicious sites. No scripts were extracted from this sample.

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/pify?keyword=hot+work+permit+template+word
- http://kixupeni.reganwhmacaulay.com/uploads/1/3/1/4/131483830/3039111.pdf
- http://files.sproutmeadows.com/uploads/1/3/1/8/131856492/42144850d0187c.pdf
- http://files.rumbleandresist.net/uploads/1/3/1/8/131856723/a63c21a4d4.pdf
- https://static.usrfiles.com/ugd/aa14a9_d5967776318347c9bf3a6db6353a297c.pdf
- https://static.usrfiles.com/ugd/b8c837_c8ec1c93e2124960808ea6b7f82222e0.pdf
- https://static.usrfiles.com/ugd/40b9e6_e4e438be26074c218aa697ad5cec8edd.pdf
- https://static.usrfiles.com/ugd/c6ac46_a2a1ec85ad734dbdaad5f16accee368b.pdf
- https://static.usrfiles.com/ugd/7c30af_a7aee21949424ef39d4a544c1b16cfc9.pdf
- https://static.usrfiles.com/ugd/eb4c03_54908896f6b54341b0c58da7e5f86728.pdf
- https://cdn.shopify.com/s/files/1/0430/9558/9013/files/84770958509.pdf
- https://cdn.shopify.com/s/files/1/0443/0485/9292/files/wow_classic_mage_aoe_leveling_guide.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_off00007046.bin` `3eaa563ee5808c7ef612e45dec91e375cd9d4df6f141e5fcb35bf86c8ba6551d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7046	5044 bytes
`font_01_sfnt_off00008162.bin` `94aff2c1274009fd36c9166e0101a535667ffab32b09a9de00c1fe8be52c7888`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8162	9884 bytes

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