Malicious PDF — malware analysis report

Static analysis result for SHA-256 47975112117632a0…

MALICIOUS

PDF

53.1 KB Created: 2020-10-25 19:03:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: bc3ac754332068e3675fa2ca698e9218 SHA-1: ede309f1d5d07098fc06156f8f4112f54abcf0f5 SHA-256: 47975112117632a0aa93c880439f453a72286fc6930d0a55b2a14a6712926ed7
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to S3 buckets and other file-sharing services, suggesting a link farm or SEO poisoning attempt. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'ttraff.me'. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. No scripts were extracted, but the primary attack vector appears to be directing users to malicious or deceptive websites.

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.me/123?keyword=stitch+multiple+pdfs+together+mac In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379049/normal_5f8b123bb56c2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/migivewuwe/jugobamare.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/vakezus.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/fomulitupobunab.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/zilew.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/kannada_opposite_words_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e27f1bcc-0708-4f33-84f8-86ffe5956a08/revafom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61d8e8d1-214e-453d-8cd8-2f307a0ce1b3/surafuxasudonejetoromexol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3413/9546/files/nursies_when_the_sun_shines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3486/1991/files/purringtons_cat_cafe_portland.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9087/9667/files/phantasus_arno_holz.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/wonasore.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/logical_connectors_exercises_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/bouwbesluit_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/jurnal_agroteknologi_unej.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/betrayal_legacy_rulebook.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/synonyms_exercises_advanced.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/accounting_all-_in-_one_for_dummies_download.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/bernanos_gratuit.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/list_of_airport_names_in_india.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000835e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x835E 5448 bytes
SHA-256: d676257233b3a1f5197a3ab1595e0d35a469951a248a630e279f16a89d8e87a2
font_01_sfnt_off000095de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95DE 10136 bytes
SHA-256: 42efdfe979f428d68f6f567e1fd5e0f61df935557e473a9f160d41c511dc2aaa
font_02_sfnt_off0000b8a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8A8 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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