Malicious PDF — malware analysis report

Static analysis result for SHA-256 18af69c9023d0248…

MALICIOUS

PDF

53.5 KB Created: 2020-09-22 02:04:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 23c60807a6a862d34d9e8b614c688830 SHA-1: 1a584c41acf52040c8afd83231e361842b517fc6 SHA-256: 18af69c9023d02488f0eec1f5c8e9cd7f7fed8445f8218b9610a1384bf1fad99
194 Risk Score

Malware Insights

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

This PDF document exhibits malicious behavior through the presence of numerous external links, many of which point to potentially malicious redirectors or SEO link farms. The document body contains a deceptive title '1965 to 2020 money' and is generated by wkhtmltopdf, suggesting it's not a typical user-facing document. The embedded URLs, such as 'https://ttraff.club/wix?keyword=1965+to+2020+money', are critical indicators of malicious intent, likely leading to phishing or malware distribution sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.club/wix?keyword=1965+to+2020+money
    • http://kifelam.erasingculturalgenocide.ca/uploads/1/3/1/4/131437130/pemizako.pdf
    • http://bonijire.ttandeuropemotorcycleadventures.co.uk/uploads/1/3/1/3/131378991/86b7a25fb9bf46.pdf
    • http://savowo.damonlesmeister.com/uploads/1/3/2/6/132695471/ravakavamudibexid.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/secret_life_of_bees_quotes_chapter_8.pdf
    • https://cdn.shopify.com/s/files/1/0429/0458/4355/files/most_common_synonyms_and_antonyms.pdf
    • https://cdn.shopify.com/s/files/1/0478/8322/3206/files/sunosirapogi.pdf
    • https://cdn.shopify.com/s/files/1/0438/2933/0082/files/pharmacotherapy_casebook_8th.pdf
    • https://cdn.shopify.com/s/files/1/0447/2619/0234/files/internet_download_manager_full_indir.pdf
    • https://cdn.shopify.com/s/files/1/0436/8410/2297/files/rascals_video_songs_hd_1080p.pdf
    • https://cdn.shopify.com/s/files/1/0430/4830/4797/files/autocad_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/6321/2192/files/camera_fv_5_mod_apk.pdf
    • https://cdn.shopify.com/s/files/1/0429/8758/5699/files/chalkat_hamro_gagariya_ye_kanha_dj.pdf
    • https://cdn.shopify.com/s/files/1/0484/2645/1101/files/animal_farm_study_guide_questions_and_answers.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000874b.bin
cff21b1d546c2d3d732ff9b8cfd242639ea7b5c0c40e23c26d6225d097adb58f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x874B 4824 bytes
font_01_sfnt_off000097a1.bin
e43e1e892580550a56cadc43aacf4645e2ff7ab15c77658dc4e861184c5c34f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97A1 10428 bytes
font_02_sfnt_off0000bafe.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBAFE 4324 bytes

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