Malicious PDF — malware analysis report

Static analysis result for SHA-256 9649ebdfcc7b9b43…

MALICIOUS

PDF

58.4 KB Created: 2020-11-05 06:49:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 30a78e3a886d7f1fd730251fcb7254c5 SHA-1: 3b67f7ea7691ab9e2702416c91a3e90834ed7c81 SHA-256: 9649ebdfcc7b9b4373bff3f1471bd11f7ba0b352c07f3e5acb9e0893a78f0f85
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs that point to known malicious redirector infrastructure, specifically 'ggtraff.ru'. The document body, though heavily obfuscated, contains text related to a Honeywell manual and the malicious URL, suggesting a lure for users seeking this information. The ML classifier also strongly indicated maliciousness.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ggtraff.ru/strik?keyword=honeywell+th8320r1003+manual+download In PDF document text
    • https://kurikezexiwu.weebly.com/uploads/1/3/0/7/130775092/4428990.pdfIn PDF document text
    • https://zotujovub.weebly.com/uploads/1/3/4/3/134354671/2499fbb2315c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366395/normal_5f9678f4648bf.pdfIn PDF document text
    • https://venifamu.weebly.com/uploads/1/3/4/5/134501621/f817d.pdfIn PDF document text
    • https://motadali.weebly.com/uploads/1/3/4/3/134368257/7928418.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/2406058.pdfIn PDF document text
    • https://tibiwurab.weebly.com/uploads/1/3/2/6/132695994/1399207.pdfIn PDF document text
    • https://tulejimukun.weebly.com/uploads/1/3/4/3/134399478/dovopo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d216c06-6015-49f3-b8b6-6439393c3fb7/gutelegufebedoropumage.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/cdsco_approved_drug_list_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/skullcandy_barricade_xl_manual.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0000b100.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB100 25036 bytes
SHA-256: 9ef9fe4e88fdd54f985df07d2cf7023557ee3f6cd5d155545285020e85ec88ea
font_00_sfnt_off00006d4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D4B 5724 bytes
SHA-256: 26d6ec3947907c9848c7e45a11afecc5cf420f03caeb9fc388afe0d49ed0681a
font_01_sfnt_off000080ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80AC 2096 bytes
SHA-256: 9f8eff03390f4acaaf00b60f121afe18ba4c2e5c518c4e7eced54e2ce79afe4a
font_02_sfnt_off00008a44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A44 11276 bytes
SHA-256: 18ac06f22fceef825597628914f8d8b7e928068d17d63bea965816b0305b9184

Open this report in the interactive analyzer, or submit your own file for analysis.