PDF malware analysis — malicious · bead493bcf6bc472

MALICIOUS

PDF

73.3 KB Created: 2020-08-01 06:07:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 12ea6fbf1c273545dba8f470a8dfc667 SHA-1: 6142eef76c459b43cfefb313bf6f81ad54d2e4b8 SHA-256: bead493bcf6bc47243dbb1545ddbfb6adac62d1ff17e9f7d71b05cb655555560

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The ML classifier also strongly flagged this PDF as malicious. The link leads to a redirector that likely serves malicious content or phishing pages. The document body itself is heavily obfuscated but contains the malicious URL.

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/pify?keyword=warcraft+the+roleplaying+game+pdf
- http://files.onecreativechoice.com/uploads/1/3/1/3/131383269/4220151.pdf
- http://files.juliejesternewman.com/uploads/1/3/0/7/130739265/95784b84376f.pdf
- http://files.discountinsulation.net/uploads/1/3/1/3/131398093/5888154ec52a02a.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29426312843.pdf
- https://cdn.shopify.com/s/files/1/0434/3899/7669/files/39353018232.pdf
- https://cdn.shopify.com/s/files/1/0440/7230/4805/files/power_king_tractor.pdf
- https://cdn.shopify.com/s/files/1/0438/7710/5832/files/simupajonipebuf.pdf
- https://cdn.shopify.com/s/files/1/0432/3888/3495/files/52806562380.pdf
- https://cdn.shopify.com/s/files/1/0434/1052/2277/files/64628673886.pdf
- https://cdn.shopify.com/s/files/1/0427/5427/7532/files/kuvofomuv.pdf
- https://cdn.shopify.com/s/files/1/0434/9594/8454/files/54815924977.pdf
- https://cdn.shopify.com/s/files/1/0431/9651/4461/files/92301662697.pdf
- https://cdn.shopify.com/s/files/1/0429/8076/9951/files/danovopotikidemu.pdf
- https://cdn.shopify.com/s/files/1/0432/6300/0734/files/49174300718.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_off0000e038.bin` `c791b25deb687eca8aa43e1d2b9ad4943ecfcce20cbe4e5b87cc87b9f9c6eee8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE038	5504 bytes
`font_01_sfnt_off0000f2dc.bin` `32028870a1bdd878a552d728dceeefb61e502fd9abe45944034ef887c5c4d409`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF2DC	11548 bytes

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