PDF malware analysis — malicious · e17105936a352b7c

MALICIOUS

PDF

45.7 KB Created: 2020-10-25 05:45:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04

MD5: dfb214b0f993dbd3694bde04cb4f20b1 SHA-1: d68f0f95e94525800dbcaff1729e9e71e1277c3c SHA-256: e17105936a352b7cf7f806e97c49b8a6cb9d0bc19b587c16fe92ae0f14078c9b

162 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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/123?keyword=download+kiloblocks+mod+apk In PDF document text
- https://cdn-cms.f-static.net/uploads/4412568/normal_5f94e4234f4f8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368745/normal_5f935d2a5fc01.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373259/normal_5f8b4a54041bf.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/cb9c11d7-1d71-4523-a2f4-12bf27cb8f77/download_stronghold_crusader_3_free.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e8319100-d32f-47b3-b217-33b281f299ea/japik.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/342482aa-3533-4e68-9dfd-a4aea821ab59/zolubodegozoburitosimabos.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/01ec5807-e174-4c09-972d-4545856c3467/78594869779.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/55b77a6e-4fa4-4fd8-bbd8-13976c73533a/how_to_download_your_own_sound_on_tiktok.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a6e717a6-c4e0-4832-92e3-3257b9c6afd7/namepevuwexob.pdfIn PDF document text
- https://s3.amazonaws.com/nupotukig/bihar_stet_computer_science_syllabus_2019_download.pdfIn PDF document text
- https://s3.amazonaws.com/mijedusovineti/77765944860.pdfIn PDF document text
- https://s3.amazonaws.com/wovitiku/amino_acids.pdfIn PDF document text
- https://s3.amazonaws.com/saxefi/gigixitajajawelodomopoxep.pdfIn PDF document text
- https://s3.amazonaws.com/zaxuledo/dunov.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d673770e-b623-4621-9214-070a7724ea39/moto_g6_release_date.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/90d8bf72-525b-4aaf-a350-517f19652a1e/kopotedadufud.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/361333c4-fb02-4469-8415-8853b209c0a8/boduririg.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d11002af-339e-488e-801b-e6227070f77d/73327755698.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/92544a91-ba70-4b1a-b6af-1b431a59366a/rebomuwibisaxag.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/1512/5662/files/asenware_fire_alarm_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/3499/1528/files/migavaxekakowaxax.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0486/4848/7070/files/rockwell_bladerunner_rk7320_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0495/0399/4015/files/animus_stand_alone_mod_apk_download.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00007175.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7175	5420 bytes
SHA-256: `7622e1b100b9f0cbce0331bd70bd06af97ff835398ca30c9ad18167442eb29d8`
`font_01_sfnt_off000083e7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83E7	11120 bytes
SHA-256: `71a7963dcf513e9af142000ab5ee0872974870247b0f21a18ec5b397ec3c12c9`

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