Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d29fe0ff31dc39f…

MALICIOUS

PDF

72.3 KB Created: 2020-03-10 08:52:23 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 25c1827835b68034e3d324211ae30103 SHA-1: 591ddbe71145dffb893012c621585f2ff654fd9a SHA-256: 8d29fe0ff31dc39fe50a1ec17f09bcdc1bee670adfe921c8f21261c74e5c2429
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, many of which point to other PDF files hosted on unrelated domains. This suggests a link farm or SEO manipulation tactic. The presence of a 'download button' lure further supports a malicious intent to direct users to potentially harmful content. No scripts were extracted, limiting the analysis of direct payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://ddct-24-4-crs-4g-100m.pleasingfood.com/uploads/1/3/0/3/130313186/130313186.html#hindi+letters+in+english+pdf PDF link annotation
    • http://nrvikingspiritwear.com/uploads/1/3/0/8/130874501/6836300.pdfIn PDF document text
    • http://discoveryai.com/uploads/1/3/0/8/130874670/tibuwenejij.pdfIn PDF document text
    • http://drashraf.co.uk/uploads/1/3/0/7/130775792/31463.pdfIn PDF document text
    • http://www.ctmsolns.net/uploads/1/3/0/4/130476821/wadivefelel.pdfIn PDF document text
    • http://christianefontaine.com/uploads/1/3/0/6/130622032/degaw_noganorelunugu_dixufufikaluj_gakizej.pdfIn PDF document text
    • http://multi-touchscreen.com/uploads/1/3/0/4/130478602/fesim.pdfIn PDF document text
    • http://shambling-shimmies.com/uploads/1/3/0/2/130272482/sakuzidajera-sirofolavipe-doniwudorigox.pdfIn PDF document text
    • http://flushit.org/uploads/1/3/0/5/130544790/vetegefazowavor_lamesuzotopukem.pdfIn PDF document text
    • http://josephinelonetti.com/uploads/1/3/0/4/130489522/2223136.pdfIn PDF document text
    • http://evolvelearningstudio.com/uploads/1/3/0/4/130476158/25a93d.pdfIn PDF document text
    • http://moonmanifesting.com/uploads/1/3/0/4/130477755/5230695.pdfIn PDF document text
    • http://www.amaarchitectsllc.com/uploads/1/3/0/2/130273987/riwemude_lonezobuguwudal_rebesimi.pdfIn PDF document text
    • http://creditgeeks800.com/uploads/1/3/0/5/130539097/3799086.pdfIn PDF document text
    • http://chesterspetbakery.com.au/uploads/1/3/0/8/130814935/pulatusom.pdfIn PDF document text
    • http://455-bonus.site/uploads/1/3/0/3/130379604/9758992.pdfIn PDF document text
    • http://huurschuur.nl/uploads/1/3/0/2/130272340/9741065.pdfIn PDF document text
    • http://root.hasaicogroup.com/uploads/1/3/0/5/130545194/6462890.pdfIn PDF document text
    • http://www.eccevideos.com/uploads/1/3/0/6/130621582/jetuf-nelologame-naxegovej.pdfIn PDF document text
    • http://www.tritonsunited.org/uploads/1/3/0/7/130739660/6719646.pdfIn PDF document text
    • http://kartell.com.vn/uploads/1/3/0/5/130540182/rexatepot.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn 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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b6b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6B4 8236 bytes
SHA-256: 5819089bfc5947661f97d85eda2781d60acb8160d5e4361b2f88c8a9edc18ab4
font_01_sfnt_off0000d68f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD68F 1388 bytes
SHA-256: 1723f1ced37cc89d69e30f3df6281c5e5fb8989544fd4587aa75b00c91af2fd0
font_02_sfnt_off0000ddf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF5 18764 bytes
SHA-256: d757ec0629ee71e2820ae8b49ca200906f1ea2efd8910b78c0850aa65009d153

Open this report in the interactive analyzer, or submit your own file for analysis.