Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b2be4aae28f9f0f…

MALICIOUS

PDF

46.8 KB Created: 2020-08-24 07:20:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 73d4b98aa24219737de8bef99b61f0f5 SHA-1: 4300504110d7b6f769714732324fc666851d2203 SHA-256: 9b2be4aae28f9f0f734e574e4584e2cf51117bda6206934db1dc6ab0695d3f82
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with one identified as a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external PDF link farm, suggesting the document's primary purpose is to host these links. The presence of the malicious redirector URL strongly suggests an attempt to lure users to malicious sites. No scripts were extracted from this sample.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.ru/pify?keyword=grim+fandango+petrified+forest+guide In PDF document text
    • http://files.tabbyruins.com/uploads/1/3/2/6/132683014/1693a20427f5fe.pdfIn PDF document text
    • http://marewok.treasured-one.com/uploads/1/3/1/8/131871991/xawitem_xulaserudemo_disisopogix_bopapomevi.pdfIn PDF document text
    • http://files.babygeelong.com.au/uploads/1/3/0/7/130776088/0335e64.pdfIn PDF document text
    • http://files.harfordspoint.org/uploads/1/3/0/7/130776644/bulujupifubinesu.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://cdn.shopify.com/s/files/1/0433/8669/9925/files/faxing_cover_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kofuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2619/4333/files/kusasibilatababefomelez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5197/3799/files/super_sport_live_tv_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9679/3503/files/21302566615.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0772/0094/files/71499812342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/waderivopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3029/0327/files/majadudex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/vekopokudap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/lipebutewiwevara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6191/9390/files/nediviboduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7519/0430/files/alter_ego_a2_gratuit_avec_cd_audio_mp3_gratuit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3282/8314/files/pr_cover_letter.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_off00006e04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E04 5240 bytes
SHA-256: 5a82c9e0ca390f0c71d8225cf773e1af774a4f5eade5dabbceb6ef69c1299366
font_01_sfnt_off00007fc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC2 9480 bytes
SHA-256: 4f3a533d7eef1fa0946fec88543b75b16d65e8a010c3a3784e085eb74c9e89fc
font_02_sfnt_off0000a039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA039 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71