Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2fa424b1788a5df…

MALICIOUS

PDF

43.7 KB Created: 2020-08-19 05:26:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 09d3799657884f9862a9d179a9d37a17 SHA-1: 4e5083eff9b18dd5cdb59dd7ec6bd916d91523ae SHA-256: e2fa424b1788a5df7dfe8c6bc5098102548e5fd6396a3f428ace15f7a5eeed98
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The document body, though obfuscated, contains the text 'Kepner tregoe problem analysis template' and a URL that leads to a malicious redirector. This suggests the document is designed to trick users into clicking malicious links, likely for phishing or malware distribution.

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=kepner+tregoe+problem+analysis+template
    • http://files.escolaportuguesadepeabody.com/uploads/1/3/2/6/132682684/e5ae8.pdf
    • http://tonik.icpba.org/uploads/1/3/2/3/132303108/gujetifis-salapopun-xibiwogitaz-muzajodul.pdf
    • http://files.quantumae.net/uploads/1/3/1/6/131637546/6178593.pdf
    • https://cdn.shopify.com/s/files/1/0428/4517/5971/files/96049846160.pdf
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/39690918402.pdf
    • https://cdn.shopify.com/s/files/1/0433/0071/6694/files/stryker_t2_humeral_nail_technique_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/56046196234.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8758/files/google_map_add_markers.pdf
    • https://cdn.shopify.com/s/files/1/0430/2998/7489/files/53342236005.pdf
    • https://cdn.shopify.com/s/files/1/0428/0814/8127/files/vidaje.pdf
    • https://cdn.shopify.com/s/files/1/0437/7922/7810/files/kasevowupawa.pdf
    • https://cdn.shopify.com/s/files/1/0430/4742/0057/files/33371665712.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tolipokegegami.pdf
    • https://cdn.shopify.com/s/files/1/0429/9223/8745/files/the_last_airbender_2_release_date.pdf
    • https://cdn.shopify.com/s/files/1/0434/1956/6231/files/50811487841.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000612f.bin
13a95a75a168b5cc47fcffbdbab4ad27a77cf62827ffcb67b2d00f552da2654c
pdf-font-stream PDF embedded font (sfnt) at offset 0x612F 5136 bytes
font_01_sfnt_off00007288.bin
4f06a48ec5aeaf9541fbc5583336fd05f5366f4f1f6404d9c8a99b51755d9bc7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7288 9744 bytes
font_02_sfnt_off000093c0.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x93C0 4324 bytes