PDF malware analysis — malicious · f7b2ab4516e290d3

MALICIOUS

PDF

48.0 KB Created: 2020-07-29 18:27:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bbb7b0a9599a841112ef33e930868a61 SHA-1: 53f3c1438c7456cfe53fb4b58762cf0b9060ce04 SHA-256: f7b2ab4516e290d36057f51e119ab98ba4fdf62d4b984ad27f8b5182d6888260

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links to external websites, with one identified as a malicious redirector. The document body, though heavily obfuscated, suggests a theme related to 'Sbr sewage treatment plant pdf', likely a lure to disguise the malicious intent. The presence of a link farm and a critical heuristic firing for malicious redirectors strongly indicates a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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.
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=sbr+sewage+treatment+plant+pdf
- http://files.parentlednetwork.org/uploads/1/3/1/3/131384098/wususuwasoxozi.pdf
- http://files.cardiffband.org/uploads/1/3/1/4/131407952/lejezu-jasides-jagajewi.pdf
- http://files.ronaprea.com/uploads/1/3/0/8/130813461/edc5e5cefd568c3.pdf
- http://files.dreevin.com/uploads/1/3/0/7/130738712/punenifetevo-titaxiwup-rinef-kadegodekazare.pdf
- http://files.leifrichardson.org/uploads/1/3/2/6/132681891/3536546.pdf
- http://files.ronaprea.com/uploads/1/3/0/8/130
- https://cdn.shopify.com/s/files/1/0432/7142/2102/files/rujidubudovoxita.pdf
- https://cdn.shopify.com/s/files/1/0430/7527/2855/files/pebabirimaraxuforusoz.pdf
- https://cdn.shopify.com/s/files/1/0434/7258/4861/files/jesig.pdf
- https://cdn.shopify.com/s/files/1/0430/7963/1001/files/murujojemewuviruwo.pdf
- https://cdn.shopify.com/s/files/1/0438/3172/2146/files/76988157131.pdf
- https://cdn.shopify.com/s/files/1/0434/8562/6520/files/ritazi.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77330784460.pdf
- https://cdn.shopify.com/s/files/1/0433/4678/8502/files/vadab.pdf
- https://cdn.shopify.com/s/files/1/0432/2387/5746/files/62294715940.pdf
- https://cdn.shopify.com/s/files/1/0429/8565/2375/files/kafimemajufulujotiven.pdf
- https://cdn.shopify.com/s/files/1/0437/1641/1547/files/90743790965.pdf
- https://cdn.shopify.com/s/files/1/0427/8976/5279/files/39321374427.pdf
- https://cdn.shopify.com/s/files/1/0429/0222/5059/files/filipilezafug.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_off00007b93.bin` `f0c4934a94e58fbc8e8464510bc01b40739f9e369bae3580c5e42faf3ff5ea53`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7B93	5324 bytes
`font_01_sfnt_off00008d98.bin` `885a1ebae72afdc26896f61c02a9cfae5e39a8f15901119ecf009346d50a7321`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D98	10364 bytes

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