PDF malware analysis — malicious · a580677a9d7c612b

MALICIOUS

PDF

34.3 KB Created: 2020-08-31 07:46:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 1036ef9666ea9da9d08197b410e8f590 SHA-1: e92e294cc8b3f1499ee348d95d66cbbbc2494e25 SHA-256: a580677a9d7c612b31da65501db89ccf8f613b9802128d1911c1638e61c26d13

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The document body contains a URL that points to a redirector, which is likely the primary mechanism for delivering a malicious payload or leading the user to a phishing page. The ML classifier also strongly indicated maliciousness.

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.cc/wix?keyword=reading+comprehension+pre-intermediate+health
- https://static.usrfiles.com/ugd/4d400c_ae661a6ef0414dcbbfaca209e11ad531.pdf
- https://static.usrfiles.com/ugd/79cb75_a4a961227d0846dba2cb7ff20d593e16.pdf
- https://static.usrfiles.com/ugd/0ebc1f_8cf1522f66fb465b8be35517ae025713.pdf
- https://static.usrfiles.com/ugd/b8c837_df7deea3c11b460f83a3eadf210e7071.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dotedijulukamani.pdf
- https://cdn.shopify.com/s/files/1/0440/2266/1278/files/superheroes_lyrics_chief_keef.pdf
- https://cdn.shopify.com/s/files/1/0431/8937/1029/files/30236541134.pdf
- https://cdn.shopify.com/s/files/1/0428/5313/8591/files/8589868280.pdf
- https://cdn.shopify.com/s/files/1/0441/2204/6616/files/bosch_automatic_aquastop_dishwasher_manual.pdf
- https://static.usrfiles.com/ugd/008e52_3d5f51a641714de4bb8df106cca18b2e.pdf
- https://static.usrfiles.com/ugd/ce14f3_2ca1e96026d1470bb957666c31942bfc.pdf
- https://static.usrfiles.com/ugd/824332_b5b5e534828d4ff9998d8e7050e6ee56.pdf
- https://static.usrfiles.com/ugd/18f527_e4898d1ec0ab464a80f08e398fde8ec3.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_off000047e9.bin` `c3abd8b03e468b9638a183d0a1e8d39ed5b5b2058592955a56850a5c3d958786`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x47E9	5524 bytes
`font_01_sfnt_off00005a86.bin` `5cd4ddac7f2481b9c38ded957237dfeaa59ad9610b356fc1d164802002dcb69f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5A86	9840 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.