PDF malware analysis — malicious · a45052292643362c

MALICIOUS

PDF

48.3 KB Created: 2020-08-14 02:05:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a990c9eeb5969d3260fc7b14f5f099d6 SHA-1: 2191aabcb0cac0a640ee28e2a321192a6dde3eaf SHA-256: a45052292643362ca82870687049fea7b3930f33b494d6cd9b49caedf30c693a

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link disguised as "Hvac certification test answers". The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this, and the ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the target URL, suggesting the primary goal is to redirect the user to malicious infrastructure.

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=hvac+certification+test+answers
- http://nakigisu.blacqueen-ent.com/uploads/1/3/2/6/132696323/7989910.pdf
- http://files.hairbyhkt.com/uploads/1/3/0/7/130776594/vulavimudepikas_sewidaf_xezawuj.pdf
- http://files.mpgcamb.com/uploads/1/3/1/1/131164281/kudipujezoxalazu.pdf
- http://files.purposefulperspective.com/uploads/1/3/1/3/131398555/monaronivafuzul_wowala.pdf
- http://ruxalezur.soullightcollage.com/uploads/1/3/1/3/131380845/matekiturop_lamixeniz.pdf
- https://cdn.shopify.com/s/files/1/0434/1740/3559/files/vovivulefuguwan.pdf
- https://cdn.shopify.com/s/files/1/0440/4156/8421/files/migedogitutodazevuzekifev.pdf
- https://cdn.shopify.com/s/files/1/0434/1451/9966/files/tumelagaferuvujew.pdf
- https://cdn.shopify.com/s/files/1/0437/8106/2805/files/ff14_act_kagerou.pdf
- https://cdn.shopify.com/s/files/1/0434/4391/2854/files/48907887099.pdf
- https://cdn.shopify.com/s/files/1/0433/0212/5733/files/kuweluzazalasoxevas.pdf
- https://cdn.shopify.com/s/files/1/0427/6980/9564/files/najaz.pdf
- https://cdn.shopify.com/s/files/1/0427/9477/8791/files/47910952141.pdf
- https://cdn.shopify.com/s/files/1/0434/1304/5398/files/you_ll_never_walk_alone_piano_sheet_music.pdf
- https://cdn.shopify.com/s/files/1/0432/0821/2638/files/lolalopezujowatufeb.pdf
- https://cdn.shopify.com/s/files/1/0433/4272/5275/files/types_of_bioassay.pdf
- https://cdn.shopify.com/s/files/1/0435/4434/6792/files/72900779259.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/
- https://cdn.shopify.com/s/files/1/0440/4156/8421/files/m

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00008032.bin` `de7c130901b0bd6fb35157a2c1be4a631edbc6f5b5dfb84e9f648dc8f40d380d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8032	4956 bytes
`font_01_sfnt_off0000912e.bin` `83f92a368bbe7721fe01b92fab953f0cba08e1b87c5551d982fece224c646dcf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x912E	10200 bytes

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