PDF malware analysis — malicious · 935e238cbde3b607

MALICIOUS

PDF

47.7 KB Created: 2020-09-05 22:15:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: db5feacb2f8dcca61ef04d5831be88e3 SHA-1: da564f3f75036fca3f0e83542310469e4b2ccb18 SHA-256: 935e238cbde3b607080b66d98b520ad5cb905f78d86745fd99501d630ad3bebb

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, identified as a link farm. One critical heuristic indicates a malicious redirector link pointing to 'ttraff.me'. The document body, though heavily obfuscated, also contains this URL. This suggests the primary purpose is to lure users to malicious sites, likely for phishing or to download further malware.

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=malika+andrews+reporter
- https://static.usrfiles.com/ugd/943725_9216b3a7d6644bef89e2d31f5b985705.pdf
- https://static.usrfiles.com/ugd/7e0eb0_dbd0173a5f7f49aebe7a34949b38c487.pdf
- https://static.usrfiles.com/ugd/ddb60a_caae83a94ec94f1b98852c7a5b89454d.pdf
- https://static.usrfiles.com/ugd/4479ed_73dc236facb646b5aebac9496b0aea12.pdf
- https://cdn.shopify.com/s/files/1/0429/8542/2997/files/tasujotasan.pdf
- https://cdn.shopify.com/s/files/1/0429/8991/2218/files/aatish_movie_audio_song.pdf
- https://static.usrfiles.com/ugd/cc1a03_5878a049c82247009e643a875e8a4db0.pdf
- https://static.usrfiles.com/ugd/f84671_2244f850274f486cb49f72a576f19170.pdf
- https://static.usrfiles.com/ugd/6908d7_a5bf77d554224483a3655efd994b1949.pdf
- https://cdn.shopify.com/s/files/1/0433/3407/4523/files/47992788829.pdf
- https://cdn.shopify.com/s/files/1/0437/2001/6021/files/sparkle_brush_photoshop_cs6_free.pdf
- https://cdn.shopify.com/s/files/1/0432/8351/3494/files/getejifetamawixezuganif.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_off00007f95.bin` `a3be9f5fdd6c356c44fae899c8460a816dcaed80f1b30d5ff065631dcb1bd47c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F95	5116 bytes
`font_01_sfnt_off00009125.bin` `0e813b18d71af548ba15825ada2b70cb67e91dd73b9b9f710fcba7ebf3277483`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9125	9672 bytes

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