PDF malware analysis — malicious · 02a1245bb0a93efa

MALICIOUS

PDF

40.7 KB Created: 2020-09-11 15:11:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 891770b9f585b62edd22838ec0a08dda SHA-1: d961fca9fcd843538ed1e6b5494774395de2b50b SHA-256: 02a1245bb0a93efa44db828046b0dcfa5b0ee8af0548e21c03d079382aa08348

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to potentially malicious redirectors or SEO link farms. The document body, though heavily obfuscated, contains a URL that appears to be a lure for movie song searches, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful 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.club/wix?keyword=brahmachari+tamil+movie+songs+free
- http://mevozuj.thehotshoporegon.com/uploads/1/3/1/4/131482995/davukezin_vojupe_berikopanosek_zifirav.pdf
- http://files.psychespiritfood.com/uploads/1/3/0/8/130874009/sodejogalak-bozosogudemag.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0431/8950/2110/files/niduworajijifogeni.pdf
- https://cdn.shopify.com/s/files/1/0432/6418/0390/files/3dcrafter_3d_modeling_software.pdf
- https://cdn.shopify.com/s/files/1/0433/8827/2805/files/31286383374.pdf
- https://static.usrfiles.com/ugd/73c254_182df86ab7ef4881bdcd502311c3fda6.pdf
- https://static.usrfiles.com/ugd/cacfd7_2b4c7731379244aea7b97c48fd872313.pdf
- https://static.usrfiles.com/ugd/e66789_8d5496aec5f249a9a4dbba0b3a5128b3.pdf
- https://static.usrfiles.com/ugd/d94ae5_598f8311841944f5b80d56ed0327bc34.pdf
- https://static.usrfiles.com/ugd/a0d21a_a3e12ebfc31a4e23bb540a2550a6ef0d.pdf
- https://static.usrfiles.com/ugd/5e81b9_9e521d7bd1d440839f9cb7cb4f928f28.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_off00005fe5.bin` `efc959bd6371ba4e9d8cfaf7890debdfe69f98ee8cdf011212b44c8ded7d189f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FE5	5404 bytes
`font_01_sfnt_off00007227.bin` `f0a112b165c2d0e41d979f7bfc7afd093255e2fa8716904aa97f633a24e51f3a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7227	10764 bytes

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