Malicious PDF — malware analysis report

Static analysis result for SHA-256 46080fe632495702…

MALICIOUS

PDF

53.2 KB Created: 2020-10-15 17:32:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: aaadbc81565d6d5188b3ff1fd766051e SHA-1: 3e800f6f7479e5692cf1705f68a14e7ab70f5e83 SHA-256: 46080fe6324957028c974af3a1faf2d090f822c20f0fff17d3bfe9bc55c64a31
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO spam operation. One prominent URL, 'https://gettraff.ru/123?keyword=manual+book+aplikasi+sicantik', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to 'manual book aplikasi sicantik' and the wkhtmltopdf application, indicating a potential lure to disguise malicious activity.

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://gettraff.ru/123?keyword=manual+book+aplikasi+sicantik In PDF document text
    • https://site-1039886.mozfiles.com/files/1039886/50488292008.pdfIn PDF document text
    • https://site-1038707.mozfiles.com/files/1038707/42502045628.pdfIn PDF document text
    • https://site-1039933.mozfiles.com/files/1039933/95818948143.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/6310844.pdfIn PDF document text
    • https://kuwofepex.weebly.com/uploads/1/3/2/7/132740654/debigodaf_faruwisa.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lulodegoner.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/duwivif.pdfIn PDF document text
    • https://site-1038658.mozfiles.com/files/1038658/jaxaduzevovebakorebuv.pdfIn PDF document text
    • https://site-1038578.mozfiles.com/files/1038578/bedufubalob.pdfIn PDF document text
    • https://site-1038675.mozfiles.com/files/1038675/zimus.pdfIn PDF document text
    • https://site-1038825.mozfiles.com/files/1038825/kenegusibodis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/5647/6572/files/correct_use_of_prepositions_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1165/3279/files/dark_souls_gough_blind.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4432/1945/files/kuzowivigoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9232/1477/files/pharmacology_books_for_medical_students.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1274/9469/files/my_hero_academia_season_1_ep_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7004/5864/files/right_hand_rule_practice_with_magnetic_moments_and_torques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1172/1381/files/no_bake_smores_icebox_cake.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ade99d76-c285-48ba-95c3-aa895df02d3f/90600272093.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/021e9cd7-ba18-4b23-965b-c5ce496901b1/20164352090.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d903a324-9c26-465e-9252-82ffd39dfa89/jojesibir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab5f4778-b5e4-43fb-abff-432457c3c94a/wizovigezota.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000915e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x915E 5040 bytes
SHA-256: 09582a16ac5e64529a16e0258c7e9b6146897731529d44f86b8c4b8fe7026633
font_01_sfnt_off0000a297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA297 11008 bytes
SHA-256: b248a023468364a0c7fe34ca22234b255fc2577bd08cdc86dea9ad45c652a62d

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