Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d2e7daf5b42830d…

MALICIOUS

PDF

42.3 KB Created: 2020-08-14 01:11:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e50a46cd2efd463dff9ead836fca1179 SHA-1: bad837e95da607cdc277edf76a10e407eaad3130 SHA-256: 2d2e7daf5b42830d783e86f980d4946b26274614110cf45c3a75ebbdcb2e897f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic identified a direct link to a known malicious redirector, ttraff.com, which is disguised as a search result for a thermostat manual. This indicates a likely phishing or malware distribution attempt leveraging SEO poisoning tactics. No scripts were extracted from this sample.

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.com/wb?keyword=braeburn%20thermostat%203000%20manual
    • http://files.hicksandslicks.com/uploads/1/3/0/7/130775635/rajorubo.pdf
    • http://tedawubup.tomatbaylor.com/uploads/1/3/0/8/130813095/gonofowilelobulivi.pdf
    • http://files.rokforcefusion.com/uploads/1/3/0/7/130776401/9579064.pdf
    • http://bazane.pestcontrolvegasnv.com/uploads/1/3/1/6/131606289/sasagezew-napovawato-zunilu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9617/8849/files/moridodijajesojefi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7949/8918/files/nejapikiriru.pdf
    • https://cdn.shopify.com/s/files/1/0450/8113/3219/files/atmospheric_pressure_definition.pdf
    • https://cdn.shopify.com/s/files/1/0437/8345/4872/files/nokamirimesurafenof.pdf
    • https://cdn.shopify.com/s/files/1/0436/0349/3022/files/79529867414.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dokole.pdf
    • https://cdn.shopify.com/s/files/1/0434/3159/2102/files/waxolefusaka.pdf
    • https://cdn.shopify.com/s/files/1/0437/2732/3301/files/38968823725.pdf
    • https://cdn.shopify.com/s/files/1/0444/0922/5382/files/obc_caste_list_in_punjab.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/54233035585.pdf
    • https://cdn.shopify.com/s/files/1/0432/2305/6545/files/blender_2._79_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/1092/3423/files/bimoxaj.pdf
    • https://cdn.shopify.com/s/files/1/0434/0760/5923/files/79972850621.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.

FilenameKindSourceSize
font_00_sfnt_off000066e6.bin
f85141c1491819a15c625ddb6f91a7ef2216827cd4a29f0ddbcf61cc7f9ced2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66E6 5420 bytes
font_01_sfnt_off00007920.bin
99d31e84ef25790157807ab27195ea3d11332788ed7f3f100799d85ae203a7f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7920 10360 bytes

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